Malicious PDF — malware analysis report

Static analysis result for SHA-256 7faf4ff0ba0eb37e…

MALICIOUS

PDF

64.3 KB Created: 2020-09-29 21:56:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d43442e78270e636d41312187cb0c26 SHA-1: 2f730843b16221f47317290960d26a77b2e7d950 SHA-256: 7faf4ff0ba0eb37e8ddeacfbd0c2bf70348aa50fbf222b557f25a290c0944042
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external resources, many of which are identified as part of a link farm and redirect to malicious infrastructure. The primary redirector URL is https://gettraff.ru/strik?keyword=absorption+of+amino+acids+pdf, which is flagged as malicious. This suggests the document is designed to lead users to malicious sites, likely for phishing or malware distribution.

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://gettraff.ru/strik?keyword=absorption+of+amino+acids+pdf In PDF document text
    • http://mesap.drtrevorsmith.com/uploads/1/3/1/1/131163930/a8d2ba.pdfIn PDF document text
    • http://files.cakefuntasie.com/uploads/1/3/1/6/131606486/ruvabikatejaf-numonifof-simakid.pdfIn PDF document text
    • http://files.ca-radio.com/uploads/1/3/1/0/131070820/lolozelese.pdfIn PDF document text
    • http://files.pmawm.com/uploads/1/3/2/6/132682093/jeregepajofe.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/1/0428/7833/7187/files/36436645916.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8190/7870/files/resume_template_for_first_job_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5768/4375/files/57617169942.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8794/6143/files/ak_47_song_mr_jatt.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/tooth_brushing_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1551/files/50036836979.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8515/2927/files/ropepugorofikixugokev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6122/9206/files/54599521813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4934/4421/files/retinoblastoma_pathology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4647/2342/files/8322219758.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a8d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA8D7 5396 bytes
SHA-256: e1a4036e3e15293c3c1dc309c95776f54db68804de9c927ddaaf888f839ac7b9
font_01_sfnt_off0000bb16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB16 10288 bytes
SHA-256: 665bb736477cf1a07cedb6571ad9e68469c39c78ecd0edf033c468cd221d86e6
font_02_sfnt_off0000de76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE76 16176 bytes
SHA-256: fa612d8c9dad5fc420386685e9432306c519ad4800a09fb601716f8095a448f7

Open this report in the interactive analyzer, or submit your own file for analysis.