Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ded6174d2452a18…

MALICIOUS

PDF

49.3 KB Created: 2020-10-27 02:52:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: c0b175e9c69e97de4287278b9cd8a6ef SHA-1: e49e8df23bba5dd62be1a987921d667e8bc976dc SHA-256: 8ded6174d2452a184b532b3db51563bdc388b45708ad5a37717373342c649f33
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ggtraff.ru, which is likely used to funnel victims to further malicious content. The document body, though heavily obfuscated, contains text related to 'Las mil y una noches libro resumen' and the malicious URL, suggesting a lure to trick users into clicking the link. The presence of numerous other PDF links, many pointing to benign Shopify domains, indicates a potential link farm or SEO manipulation tactic to obscure the primary malicious destination.

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/strik?keyword=las+mil+y+una+noches+libro+resumen In PDF document text
    • https://cdn-cms.f-static.net/uploads/4381528/normal_5f9767e9aa811.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_5f8d28e5c4674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5f8c795303ad8.pdfIn PDF document text
    • https://feleluxotikuko.weebly.com/uploads/1/3/4/3/134338959/rupajelamozuxilupari.pdfIn PDF document text
    • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/6239860.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/1/0434/7622/2118/files/german_shepherd_malamute_mix_for_adoption.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4155/3046/files/87391852248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8860/9948/files/8343909070.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/81918904172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/5895/3885/files/42583570461.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/animal_farm_novella.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/pdfkit_html_to_nodejs.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/calligramme_apollinaire.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/2569377946.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d79268bb-3b77-4cb3-a9e9-76a4e23ed4e3/watabo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a81d687-d5e7-4cbe-b631-50829f1e6a2d/65756812460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9577aa48-e44b-4711-8951-3ecaa27887c5/59625965602.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4055ecd4-9d83-43fa-a99c-62ffe18bdc5f/51534301713.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4ea410d-2ec2-42f3-897c-3a82ff9c2a8e/81495228054.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_off00008122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8122 5220 bytes
SHA-256: bd1a3e7a17c290d502af560eba7f29d7d10e026fbc6039e569c2d7bc9910f791
font_01_sfnt_off000092bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BF 11396 bytes
SHA-256: 9b77080d871fc3d12204331d95be524c62677e2ba4808acfae67ca55fe4d5117

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