Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d2d06a1da270383…

MALICIOUS

PDF

41.9 KB Created: 2020-10-03 10:27:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0b6d6254820f8bc3c92c63f7e824f9bf SHA-1: 9239b22a71d07893715e08566e3a3366b5b1bf9f SHA-256: 7d2d06a1da2703839ff7245c40539633b91f4e6acdd09e5cf77424206537db9e
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files, forming a link farm. One of the primary links, 'https://ggtraff.ru/pify?keyword=donde+viven+los+monstruos+pdf+espa%25C3%25B1ol', is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest it is designed to lure users to malicious sites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/pify?keyword=donde+viven+los+monstruos+pdf+espa%25C3%25B1ol In PDF document text
    • http://moparik.veteransplumbingandrooter.com/uploads/1/3/0/7/130775403/bidavoruji.pdfIn PDF document text
    • http://kubilasot.tvtresdiasid.org/uploads/1/3/0/7/130775229/4354039.pdfIn PDF document text
    • http://files.ninjateachers.org/uploads/1/3/0/7/130740622/2711655.pdfIn PDF document text
    • http://kupod.slcsupplychain.com/uploads/1/3/2/7/132710497/5402614.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0518/1603/files/jazilokuvaguwedolodigijab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4132/3170/files/chapter_7_nucleic_acids_and_protein_synthesis_vocabulary_review_crossword_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/1249/0133/files/chikhaoui_fifa_14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9907/8304/files/icivics_government_and_the_economy_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9844/2401/files/julius_caesar_act_4_and_5_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/291b242b-4b21-441d-90cb-bfbbbd96a6f6/guvimidokaxikamupil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22154ecd-3d22-4aad-a1b7-6a627c17391c/tinizogowapazokigab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5768fc1-547c-413c-90dd-2510e0f2417c/15605411892.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5485c386-8e62-4ed2-8ff9-1ea66341913c/wiwefivimipukidopafilun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feeadb35-c72f-4664-8b74-3b4b9e4552d0/savegilamidipojefumeweni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f902847-fd84-4167-9e0a-c2374bd9e725/zowipuburowukam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/baab222c-0e27-467b-b35c-af24444dee47/toramumiguvedodika.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6113 5460 bytes
SHA-256: 766f40709961723924629d9f2ef3725eb856fc593f69ceddfaa78ca4a24ddb3f
font_01_sfnt_off00007355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7355 11188 bytes
SHA-256: 13b4f466e158439440a3bf55b8512a35372655fe3c6e8b7e997a9f775acca662

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