Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35b2e989d12aab1…

MALICIOUS

PDF

147.1 KB Created: 2021-05-31 16:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 377837abfd08b15dc8c530d38d3e86ea SHA-1: 1c336031e36663747153decc9c0edaf0ee570c6b SHA-256: e35b2e989d12aab1fb241e8b2af0be64dbc440987fe612c5587e7d36cbbb8300
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9764

Heuristics 4

  • 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 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
  • 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://garglob.ru/pbw?utm_term=what+does+42+mean+in+hebrew+gematria PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4444626/normal_5fe81c462d521.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492278/normal_5fff4cd424d5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407069/normal_5fdfd52c7925d.pdfIn PDF document text
    • https://rogebupapopax.weebly.com/uploads/1/3/0/7/130739826/wabizerolilexemenud.pdfIn PDF document text
    • https://gazetitorujij.weebly.com/uploads/1/3/4/5/134599815/3651140.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_606dec3ea7279.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421983/normal_6043056f2b89d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467043/normal_601a74a2ae3eb.pdfIn PDF document text
    • https://runumoviw.weebly.com/uploads/1/3/4/8/134854062/2348710.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462096/normal_60643b601d2e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375886/normal_5ff14ce6e91f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457857/normal_5ff49dcc4dd11.pdfIn PDF document text
    • https://faruroju.weebly.com/uploads/1/3/5/9/135986438/naliwifimam-sotit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402956/normal_603292d6dec4e.pdfIn PDF document text
    • https://satutetijin.weebly.com/uploads/1/3/4/6/134635437/bodotekinobolevu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/dde3c8b0-caa1-42b1-b88d-890c8c661f64/tevirojanotevutuxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe07eae-d8b3-4e7e-9e95-9f3f7ec7b8d7/34285259468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b956d97-e8dd-4d00-80a3-eb4e780561ed/48612590738.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ac11bde-1955-4aa9-82b2-e4aa64c22b91/what_is_the_first_step_in_writing_a_chemical_equation.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fcb0a1fe-8273-4a6c-a6b4-799b7937471d/favuvazivozamodikoba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b10b0e3-b289-41ec-816a-8fef00c20baf/dukojuwanasogufad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e44028f5-d62b-479f-9de5-353530269354/6846403077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d3f42a0-d88c-469d-b3dd-4ba0928f3fd5/how_to_restart_my_fitbit_versa_lite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22ecb5ae-ea6f-4906-b9e1-bd07eebe9795/dont_be_the_smartest_guy_in_the_room.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/504ad851-fad5-4d65-93ff-9a0ac5665ec3/state_employees_credit_union_hours_raleigh_nc.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00023ced.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23CED 5672 bytes
SHA-256: fa11c17a59529da2b151bc6a174c62677ab1dd7537874e8ae2cc97260dd726b2

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