Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e464d4d025e51cf…

MALICIOUS

PDF

38.8 KB Created: 2020-08-19 06:44:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b7de3a487c3775ec2a0464c92cc7804d SHA-1: 40a9fb26c002463333046757cdf6f990e21fdf53 SHA-256: 8e464d4d025e51cf2545ba43cdf2fc3d5e85a6d009f75396abd203b04b647dab
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to a link farm designed for SEO manipulation. One of the primary links, https://ttraff.ru/pify?keyword=wallpaper+3d++for+android+mobile, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The ML classifier also strongly indicated maliciousness.

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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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=wallpaper+3d++for+android+mobile In PDF document text
    • http://files.authorcharityayres.com/uploads/1/3/1/4/131437981/ziwilegavefur-zirenirama.pdfIn PDF document text
    • http://files.shefaholistic.com/uploads/1/3/1/1/131163902/gimonimewog-napabef-madupux.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/1/0432/1152/2209/files/tetris_t_spin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67768868558.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/setixinojed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1357/0709/files/zuvawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/84613252923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7091/files/jamonesexebokanuxezenuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/72223554077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3057/6278/files/sides.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4705/9607/files/fefujad.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
🗂 Part of campaign: authorcharityayres.com 3 samples

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_off00005a41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A41 5324 bytes
SHA-256: ccddb30230787dccf73d369b752fcaf8bf73f30047c4ea6dde861a9df999fa1b
font_01_sfnt_off00006c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 9916 bytes
SHA-256: be6fb0e41c94448321905896a1d69196d7eebe1d5500fbaa976e14006a6e5e56

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