Malicious PDF — malware analysis report

Static analysis result for SHA-256 abb2e19a3061d979…

MALICIOUS

PDF

72.9 KB Created: 2020-12-15 05:44:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c7bc404ca2f409d6a65d7c0929811c78 SHA-1: 9a4a185d8b6f14fe6185038be6bfe6d8d7131056 SHA-256: abb2e19a3061d979e095764a33dcd44383743d0510e509e819afce3065fb5f74
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a significant number of external links, identified as a link farm, with one primary malicious URL. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were extracted, the presence of a link farm suggests an attempt to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffnew.ru/123?utm_term=pcwp+normal+range PDF link annotation
    • https://tevumusavobe.weebly.com/uploads/1/3/4/1/134108657/e6093.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/03ed958cf340.pdfIn PDF document text
    • https://vewusijonaw.weebly.com/uploads/1/3/4/4/134489037/wavijofi_pexorim.pdfIn PDF document text
    • https://firaxefa.weebly.com/uploads/1/3/4/6/134694685/xelurajabone-gubuke-netutudebixefid-virosos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_5f9e750f1744f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5fa7fe9c0f476.pdfIn PDF document text
    • https://miwunukeje.weebly.com/uploads/1/3/4/5/134524605/64dca58fcd15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459645/normal_5fa0fd0853b3a.pdfIn PDF document text
    • https://pulezigo.weebly.com/uploads/1/3/4/6/134600697/24dfcc3ab1e.pdfIn PDF document text
    • https://jejaxome.weebly.com/uploads/1/3/4/4/134443668/c97a5d0063.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd13e681523578e9bb2d01/1606226918407/poe_razor_of_the_seventh_sun_price.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fceea21cd9942793f246b3b/t/5fd1aa44b0f0f842d7a3ab22/1607576134677/dead_zombie_shooting_3d_hopeless_mod_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5f393f75b16643ccb94d/1606377276315/bayer_crabgrass_killer_for_lawns_label.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f8f692c50b1a1e77efcd/t/5fc21ca43f75b166431c219c/1606556839286/75887952016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce20e3c190381d6d645ace/t/5fd6a4a7154d727871f64b73/1607902376437/wika_dg-_10-_s_manual.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_off0000e170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE170 5168 bytes
SHA-256: bb9d5721bcacdb789247e19ec96fde095f9c84064162991e14d9bbc4a52e2b5d
font_01_sfnt_off0000f304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF304 10536 bytes
SHA-256: 5161cd5ef45497950b9cb73172d5a8f1266534157537df9bf9c441d165abaebe

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