Malicious PDF — malware analysis report

Static analysis result for SHA-256 7849a26406c3427b…

MALICIOUS

PDF

38.1 KB Created: 2020-08-01 15:25:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6433ad45bec47e111596c7a80ba94de5 SHA-1: db67b97383cb240c96fb3247d2c117abbe20fbdf SHA-256: 7849a26406c3427bc41bc8ff36252abe7113339a15bd0bc7c6bdb49f0f378109
202 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) disguised as song lyrics. This indicates an attempt to drive traffic to malicious infrastructure, likely for phishing or malware distribution. The ML classifier strongly supports the malicious verdict, and the presence of a redirector link suggests an initial access vector via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.ru/pify?keyword=nickelback+far+away+lyrics In PDF document text
    • http://files.emilynotman.co.uk/uploads/1/3/2/6/132682819/posewinulemevi.pdfIn PDF document text
    • http://files.uusintaensemble.fi/uploads/1/3/1/8/131858044/8920717.pdfIn PDF document text
    • http://files.thisawayrecords.com/uploads/1/3/1/0/131070289/jiwasugad-davuzitodokovo.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/1/0428/9835/8432/files/nanejixiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1883/0492/files/60885983575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2546/3456/files/44474124014.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4266/6656/files/44316529647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3000/3358/files/20749117342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4063/5042/files/cub_cadet_lt1045.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1821/files/19565573552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4244/7265/files/dezaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0985/9999/files/23778982408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/playboy_free_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/39215142037.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0769/7305/files/kunabilirurizezifobetigev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/rilejumogepodejudepofak.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 6

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_off000056fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56FC 5244 bytes
SHA-256: e755f9ac4fee1a05062c6b3f034efc22c17bd78efed56453ab1fdcb023ca7482
font_01_sfnt_off00006909.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6909 10152 bytes
SHA-256: 2d94b400d9e471d381e7b2f550bab049e9581c8a5a608a20ef29b31d20448768

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