Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7fe2c30c555f34b…

MALICIOUS

PDF

67.4 KB Created: 2021-09-26 02:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: dcc5a73f53a0adc1624f87000223740a SHA-1: af8e77e8513822281f65f411f9358ead7e01f15c SHA-256: c7fe2c30c555f34bb57239b3c6e822183b46e64235fb82673a8054f6c59ed54c
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file exhibits characteristics of a phishing lure, employing an image-only design with clickable links to external URLs. The embedded JavaScript stream and the numerous URLs pointing to compromised CMS uploads and disposable hosting suggest an attempt to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://nomylo.ru/uplcv?utm_term=ea+sport+ufc+apk PDF link annotation
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/6ea6e2b46290388e96222689d80f07e2/sexefikoranoda.pdfIn PDF document text
    • http://aviapartner.biz/js/ckfinder/userfiles/files/pegavilumizu.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/zepibelesisewavazafov.pdfIn PDF document text
    • http://celesteandtorsten.wedding/images/file/pivimetadixoposumipawison.pdfIn PDF document text
    • http://inventory-acepipe.com/images/uploads/files/41307047853.pdfIn PDF document text
    • http://yacpa.org/yacpafiles/file/guxovenurigar.pdfIn PDF document text
    • http://musicandyouapp.com/webupload/editorimg/files/42051457301.pdfIn PDF document text
    • http://giteduguedesboires.com/userfiles/file/kadefe.pdfIn PDF document text
    • https://farmacieitaliane.com/documenti/file/11655956919.pdfIn PDF document text
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614418cb07b0b---vipalenurovaniguwuxazola.pdfIn PDF document text
    • http://kdekdyjak.cz/data/senefanakolepon.pdfIn PDF document text
    • http://noithatnhapkhaugiasi.com/luutru/files/lavewaji.pdfIn PDF document text
    • http://15881588.com/ckupload/files/99310351434.pdfIn PDF document text
    • http://nkmate.com/FileData/ckfinder/files/20210914_EE48C68E0BCF048B.pdfIn PDF document text
    • http://apartament-krokus.pl/userfiles/file/16175166780.pdfIn PDF document text
    • http://oawebserver.com/piceditor/file/22995023259.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16146af6e41c9a---59071484017.pdfIn PDF document text
    • http://slesnick.net/userfiles/files/fawisazuwibediriti.pdfIn PDF document text
    • https://gizaviation.com/uploads/files/60516561654.pdfIn PDF document text
    • https://webmodeli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe496253a5---nawibijerabonuwokafi.pdfIn PDF document text
    • http://china-hold.com/UploadFile/file/20210904002955053.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_off0000ae89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE89 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC69B 13828 bytes
SHA-256: 84dba2182d074dc3030b9f2fd16c36420886139e3c5fa74977c26d320c2a4f06
font_02_sfnt_off0000e905.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE905 10272 bytes
SHA-256: 2d93438287fb9fc707a7bb7c15b49b5f43c58f9853fdea7265f9ebf4175a587d

Open this report in the interactive analyzer, or submit your own file for analysis.