Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa614cd525ffea16…

MALICIOUS

PDF

40.7 KB Created: 2020-10-28 15:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f76959c9ba52fda442f5a600e480982d SHA-1: 3f8c5bea1d9202bdef1c622b0212af0036066806 SHA-256: aa614cd525ffea1646563b53559bd60859c567e91f547505e468ac7ece763597
194 Risk Score

Malware Insights

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

This PDF file is identified as malicious by a machine learning classifier and contains multiple links to known malicious redirectors, specifically `https://cctraff.ru/aws?keyword=the+72+angels+of+magick+pdf+free+download`. The document body and heuristics indicate a lure for free PDF downloads, likely to distribute further malware or phishing content. No scripts were extracted, but the presence of numerous links suggests an attempt to direct users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://cctraff.ru/aws?keyword=the+72+angels+of+magick+pdf+free+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_5f8d049ab2353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f879d12255a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381532/normal_5f8ebbd23498f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365540/normal_5f907a838de0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377674/normal_5f8b40e778314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_5f91a9aa10330.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_5f8baf600df63.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f88b9187b112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_5f9876409b223.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417535/normal_5f981e0c20719.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/1/0502/4114/2968/files/delonghi_magnifica_coffee_machine_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8975ffe2-6c00-41a3-afcc-35de331df122/movokipezedot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/6044/3298/files/electric_potato_peeler_machine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f56992d4-fc21-4f9d-8999-7ea0658cfc50/57642990891.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb7633af-f59c-4507-bb5c-2cc6fbf3ce81/31473864579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/43844459690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8837/0582/files/basics_of_economics_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2854/7237/files/touching_spirit_bear.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0918/files/criacr_bluetooth_fm_transmitter_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_off000062ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AE 5884 bytes
SHA-256: 32df0259a2683ad2ab7ad86750aebc26a90357374799ce073c0dd4908e991c50
font_01_sfnt_off000076ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AB 9088 bytes
SHA-256: 35a129d5ef11ee3bf4123c251018ee0cacfca095a293cc608885a7fdd0cd6282