Malicious PDF — malware analysis report

Static analysis result for SHA-256 e60b56280b52ae67…

MALICIOUS

PDF

120.7 KB Created: 2021-06-28 23:37:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: fb49be5766906a386bac0ad1bd32f297 SHA-1: 72e9195c51929837751f79eb77509ac1fd497ebf SHA-256: e60b56280b52ae67e7b656ae94c2b47cb94737f0c61d491581d08f081fef16e1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating it is a malicious phishing document, including ClamAV detection as 'Pdf.Phishing.Trojan'. It features external URIs and links to compromised CMS uploads, suggesting it attempts to redirect users to malicious content. The presence of a 'download button' lure further supports the phishing and malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://infrive.ru/uplcv?utm_term=discretionary+account+agreement PDF link annotation
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/41569cf6713453fab86a41c63169db44/19674541937.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607157516b704---pezifonawowefuxoruk.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a5a3e87fc5---buvez.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a24cfc9e10---sojusisawuf.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609dca38cab3c---68575252521.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/160c2d55646dbc---zigusunimazotekefoxo.pdfPDF link annotation
    • http://renknh.com/ckupload/files/dojitenudubagawamabo.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16082027dc4b79---19505226019.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/46009298688.pdfIn PDF document text
    • http://medicapoland.pl/uploaded/file/3946090694.pdfIn PDF document text
    • http://aggengr.com/uploads/CMS/file/tudevikubegaketux.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/60800437057.pdfIn PDF document text
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c96aedc8f15---62236444435.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/41539798834.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd7e457548---devale.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/f4098ac1c0fb63be393972e5c5838da1/xikajadakudikafutagi.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/5eeb8f1af004be3b94ebb0ea297c839d/40490988286.pdfIn PDF document text
    • http://thankschicken.com/uploads/files/lupevivotejenub.pdfIn PDF document text
    • https://machnhaduong.com/images/uploads/files/92121811593.pdfIn PDF document text
    • http://uelzecht.lu/userfiles/files/vevuwipigajota.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609459e1ba8cb---kupimizujuragilat.pdfIn PDF document text
    • http://www.apsetedavisi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f58d9c6a60---zibelibodabidoxodaxe.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/3847216651.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00017689.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17689 10744 bytes
SHA-256: bfea848db00aa4d2c93b9aa5879f2719ec6786f0dc91f52a523bc86ee6c4979a
font_01_sfnt_off00018f4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18F4F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001a761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A761 17404 bytes
SHA-256: 57316c8c15aa54a2ec7c08676d6af4459ce2d9d1187848adf232bf33e81c2264