Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ac33fc64352cd48…

MALICIOUS

PDF

70.3 KB Created: 2021-03-06 05:37:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 298c4d4d7f74233687d4233a0604bf01 SHA-1: 0d4b513df07418779982944e3f0c4876223fec87 SHA-256: 6ac33fc64352cd48c1d13e03b54482abfbb316bdc53f00eeec49c35856326c13
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • 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.
  • 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://jacksth.ru/wix?keyword=ikea+oven+manuals+online PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413590/normal_5fe963cf2f65a.pdfIn PDF document text
    • https://cdn.sqhk.co/rumunefa/jeHbggi/tidavukuwekimerukeno.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/i6gjhPm/mamenubuzagevufotanap.pdfIn PDF document text
    • https://kuwupixunipava.weebly.com/uploads/1/3/3/9/133986845/ledevijonubum.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470401/normal_60018fcb3ecd7.pdfIn PDF document text
    • https://cdn.sqhk.co/kogujipubap/wo5ijJJ/grow_credit_reviews.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492586/normal_5fc63cf5c0b33.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/bifOget/zidibigep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492573/normal_6033bc1b93551.pdfIn PDF document text
    • https://wixiwifutavoma.weebly.com/uploads/1/3/5/3/135301275/ribogixovaxosuwid.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/2f09ee6c-d6c0-48ba-98c4-708a69f42375/takaxomum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c56e71-f8e3-4a8d-b57c-41fa2e6aead6/55208504953.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_f1df97c24d454cefb9f6024c50e3e008.pdf?index=trueIn PDF document text
    • https://5e3b32e6-a537-4a58-a531-ef303a468713.filesusr.com/ugd/120874_dbc7ef90c71447d692ca9a1a35c4574e.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/39551a24-f63c-4230-a486-f201c5f04d4d/magnus_chase_and_the_gods_of_asgard_chapter_1_summary.pdfIn PDF document text
    • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_cc84469faa5d40879668fb05968c7dd4.pdf?index=trueIn PDF document text
    • https://16e729f2-8c5c-4787-b670-14aeba6c5e03.filesusr.com/ugd/ac55e2_e7054e1505a14cc5bb504b964bf08285.pdf?index=trueIn PDF document text
    • https://59e5a08b-0d8d-455f-a3a7-35a3b781ab3e.filesusr.com/ugd/784815_3c3ab208b85b46faa7791673d70084b4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78cbbd4-99c6-443f-ba51-dede161d413b/what_is_a_meta_narrative_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f8bd60f-912b-4024-9508-872fc2a696b8/nadakuwatakukikaxolodo.pdfIn PDF document text
    • https://0dd0cd87-80d3-4eb5-b9c6-73c43c3a6fca.filesusr.com/ugd/f0b6b3_d2b284e2dea4498d9a28c4f5f5a3e6df.pdf?index=trueIn 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_off0000d812.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD812 4796 bytes
SHA-256: 22928cd6d11c53f14cfece0a13170e7bdec4eec93bc970892650fbc9cd4b9d58
font_01_sfnt_off0000e85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE85B 10336 bytes
SHA-256: 60a8c31efd4342183cebd79218a1cea897e20f6a1288d5657662af02d021a77b