Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a17b3a5426a9f7…

MALICIOUS

PDF

77.4 KB Created: 2021-03-21 08:20:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6b1f31e7be248b997d8d644dca06893c SHA-1: 7b6cdabb3698e8c6e4394b6022f528efe83bd2c6 SHA-256: e1a17b3a5426a9f773f6349c7e3a4b39538e8605b978042748f76bd5d867af84
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm designed to redirect users to various external PDF documents, with the primary lure being a search result for 'encyclopedia of an ordinary life pdf'. The presence of embedded URLs and the structure suggest an attempt to drive traffic to potentially malicious content, likely as part of a phishing or SEO poisoning campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 https://seumenha.ru/award?keyword=encyclopedia+of+an+ordinary+life+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4473031/normal_5feeeeb6274f9.pdfIn PDF document text
    • https://s3.amazonaws.com/satedafadusizo/pifudirujekeditejuxi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_603541a02ec9f.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/analytical_geometry_grade_12_questions_and_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420029/normal_6039a9ae4fd44.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_5fe7952076405.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/63736221398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401971/normal_603e1ae63c5f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_5fd61d5936a07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452863/normal_5fe30bf688449.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390323/normal_6035953a564a7.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/ar_rahman_hits_in_kuttyweb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424043/normal_5fce35b8a697c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://bf68d742-fb98-404a-ab47-1dcf24f7df52.filesusr.com/ugd/83e7fd_c693e43bd4444f15b40523c73b752a7e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d9d1731-8f59-4763-ae6b-569ee2f79a1b/data_structures_used_in_computer_science.pdfIn PDF document text
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_df76d58082014477ae7cc7c697472986.pdf?index=trueIn PDF document text
    • https://24b051fc-04af-4e2d-8b9e-4e75c06063ec.filesusr.com/ugd/1a488c_17e62cfc04cd425d9e5faae35b95367b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e4a8c20-f5ee-4a56-91e6-f19270cb6f4e/sadet.pdfIn PDF document text
    • https://5ccda086-29c7-4024-8a93-689df1f3b89c.filesusr.com/ugd/ed8107_ac3f2a6d168344528b966cbfd4df78b6.pdf?index=trueIn PDF document text
    • https://d046670e-94b8-4ea2-8efc-69fca9b502c9.filesusr.com/ugd/c0b427_00279158a8b24db891d32f96d6de3b85.pdf?index=trueIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B8 5032 bytes
SHA-256: 330f9d643636333f35bce4acf0ea22daf1994782bbc2f420c37dabf6fee4889a
font_01_sfnt_off000101f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101F5 11252 bytes
SHA-256: 3884eec4ea2ccc05b4e555f0b61f98c10078ef7bf75287f1927f4b7a224453a2