Malicious PDF — malware analysis report

Static analysis result for SHA-256 8049066c348032e4…

MALICIOUS

PDF

89.7 KB Created: 2021-09-04 20:59:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9b74834496fbf8ab20817c00033a636a SHA-1: b85bf2ee697f9d8133204f14df460023bc46b607 SHA-256: 8049066c348032e48d86b0e19348e0d2de368fffad4ca88c32a013a4216ee62d
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple distinct hosts, many of which appear to be compromised WordPress sites or disposable hosting. The primary purpose seems to be redirecting users to malicious content, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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 http://ohsongpharm.com/ckfinder/userfiles/files/62648646241.pdf In PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1606e6f4e5bf59---5871311165.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bevagivedepibuxipurijedi.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/37750014970.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607996329c38b---39672477540.pdfIn PDF document text
    • http://humanlitech.com/files/files/34504214298.pdfIn PDF document text
    • https://dm288.rs/slicice/file/webukalodokuletelajefeno.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/c8cc6a1a604ec49d174389f62f2b8af1/sogajezuzijupo.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/8abae20fe423ee0afcedd2b4743409c8/24694989807.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160f8e7ded1433---51253996228.pdfIn PDF document text
    • http://shuimotongyuan.com/userfiles/file/11385900527.pdfIn PDF document text
    • https://durimawar.com/contents/files/68100080622.pdfIn PDF document text
    • http://mutitar.com/user_img/files/jozirenozunid.pdfIn PDF document text
    • http://maidnheaven.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084a496e8438---9958703527.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/gitavoxu.pdfIn PDF document text
    • https://sikanderajam.com/Robinson/ckfinder/userfiles/files/87265576187.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b756cef2c4---27468519271.pdfIn PDF document text
    • http://sva-jeanroze.com/xmedia/file/93026605712.pdfIn PDF document text
    • http://geobrofab.com/clients/d/da/da7cd3953015cd63472398095fc1fcdd/File/towedumirug.pdfIn PDF document text
    • http://bscartridge.com/pic/siturifikukokolodunila.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2309c70a6---vuveremeruwuv.pdfIn PDF document text
    • http://apple888.vn/luutru/files/sikajapesokirebeni.pdfIn PDF document text
    • http://fst-uinsu.net/userfiles/files/38682247989.pdfIn PDF document text
    • https://majubesar.info/contents//files/72965301405.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=panchayati+raj+full+pdf+in+gujaratiPDF link annotation
    • 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f871.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF871 18360 bytes
SHA-256: 0df4c3cc3714bc0880125d7f91ddeb859697d289d80a4dab6b962b71ab5f92e9
font_01_sfnt_off0001284c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1284C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14063 10824 bytes
SHA-256: 1c57b6ecb556b0ee815f85b8d02007c0e7e8a8b47851829d07bf918640b61970

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