Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7dac8397957fe44…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 15:16:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9d82da0df71a4553e2b743796ba19ae1 SHA-1: cb87a5a45f90f6d8906d41be6054bc091eae5a57 SHA-256: e7dac8397957fe449a4227c15e0a317204f27c34a2879c5c58b3fb09e8783e35
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://ttraff.cc/pify?keyword=concrete+mix+design+pdf In PDF document text
    • http://files.hugh-dichmont.com/uploads/1/3/1/6/131637226/givubokelaril-gasuwa.pdfIn PDF document text
    • http://files.guardianassetmanagement.org/uploads/1/3/1/4/131483148/timedepinaze-pelimigezunonew.pdfIn PDF document text
    • http://jevazadu.assurance-realtor.com/uploads/1/3/1/3/131398140/6416578.pdfIn PDF document text
    • http://mobijixa.nailheadsforsale.com/uploads/1/3/2/8/132814930/zebemojaxiv-fadomob.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/1/0428/7610/8956/files/demopuperosanedozil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/movutomexefawilerusaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7329/7822/files/47743068949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4536/3616/files/boucher_s_complete_denture_prosthodontics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1898/5372/files/pusepagotekizitezepofi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4614/2106/files/iptables_cheat_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1931/3062/files/50790501749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0820/4704/files/61598026118.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3901/2502/files/7083283206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1334/0312/files/37807133285.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8851/9074/files/88907778054.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6438 5208 bytes
SHA-256: 19a7976b5067f19fae6a2a88b44cd6ba2d49cec52107dc2196ca26c08e833a2c
font_01_sfnt_off000075de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75DE 10500 bytes
SHA-256: 2d464303041d92478e2f4efe9112d9e31e2b80df7cad5a5171b72c6205098637

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