Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a018361928dbc07…

MALICIOUS

PDF

100.9 KB Created: 2021-03-27 20:08:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 2d2a1953271d61945b670c17ea59acb6 SHA-1: 5678765a005b812da1a07d88820fe000a454a9c7 SHA-256: 7a018361928dbc070a3e3b46876815dd515381adda7a143c750e8cfd8e4f996c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 0.9998

Heuristics 5

  • 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.
  • 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://nipisod.ru/strik?utm_term=qpets+automatic+pet+feeder+troubleshooting PDF link annotation
    • http://ladirojenovezoj.mygamesonline.org/rokikagasalaka.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/kuzuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466659/normal_605aecbcc13ef.pdfIn PDF document text
    • https://zukixemafeka.weebly.com/uploads/1/3/1/3/131398149/vumemefu_fefadijojedexiw.pdfIn PDF document text
    • http://setafugeridol.scienceontheweb.net/business_english_speaking_book.pdfIn PDF document text
    • https://cdn.sqhk.co/bitubebo/hihehgI/srs_for_hotel_management_system.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414173/normal_5fe260f314517.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491671/normal_6037d41ee55f5.pdfIn PDF document text
    • https://gufekesunix.weebly.com/uploads/1/3/4/8/134888283/14e8d5f2.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/dNcgiha/english_grammar_for_grade_5_free_worksheets.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/90f68079-957a-4b51-b4fc-1e73591e9358/how_to_tell_if_two_lines_are_parallel_geometry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/444207d4-e5a0-47c2-b5ce-b041f964ccef/zusidupoduwig.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/66135773839.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/55238354276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a0f21b-0c0b-4eea-a4cc-c92f0e3dc28f/toshiba_regza_42hl167.pdfIn PDF document text
    • https://s3.amazonaws.com/lopadivupudexa/dragon_quest_11_switch_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/6394818187.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://scripts.sil.org/OFLIn 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_off00013f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F5A 2900 bytes
SHA-256: 10a07fc969e6c8cf41398fcfefa625e426b29a45b33f3716d0886db1405c0d2a
font_01_sfnt_off0001499d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1499D 5772 bytes
SHA-256: fae98eb63a2f516c512ace8cb1b4f457c90995f23e153fe998b19b4b18a8f93b
font_02_sfnt_off00015d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D0C 11908 bytes
SHA-256: 7f9a0f4439ca01db049ced8b1b4c385a9526dc31d40b0b01a8d31620c9e88673

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