Malicious PDF — malware analysis report

Static analysis result for SHA-256 88b9998d3f7c02d8…

MALICIOUS

PDF

43.9 KB Created: 2020-08-23 19:01:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 24ec5471ee2b902a1335f9ae5d2c87bd SHA-1: 2f7345c07f38cc8464f5dbbb0ede0e07e2f03c62 SHA-256: 88b9998d3f7c02d88f386b77d4de28c830e03fb3c7326989083a5d18218910cc
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to what appears to be an SEO link farm designed to lure users with search terms like 'best free airplay app for android tv'. The primary redirector URL, https://ttraff.ru/pify?keyword=best+free+airplay+app+for+android+tv, is flagged as malicious. While no scripts were explicitly extracted, the structure and heuristics strongly suggest a phishing or scam attempt leveraging a link farm to distribute malware or lead users to malicious websites.

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://ttraff.ru/pify?keyword=best+free+airplay+app+for+android+tv In PDF document text
    • http://files.nourishe.co.nz/uploads/1/3/0/7/130776268/579234646467b9.pdfIn PDF document text
    • http://files.eastafricanscholarsfund.org/uploads/1/3/0/7/130776718/vemofuva.pdfIn PDF document text
    • http://files.unitedmissionsofhope.org/uploads/1/3/0/7/130738621/gujojomag_welabij_zijazamakap_salaxofu.pdfIn PDF document text
    • http://files.impactliberiamissions.org/uploads/1/3/1/4/131482821/fakapakonobiles-gakigijo-bofov.pdfIn PDF document text
    • http://files.zndaughtersdance.com/uploads/1/3/1/0/131069781/dc19de7df.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/1/0461/1296/4772/files/sibolezozakezibununir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/80418012130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2917/6232/files/fungsi_pendidikan_islam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sovonuvebapade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/limojarizono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4605/0728/files/mojotiborolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7292/9435/files/71548427195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/45340397110.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0976/7584/files/movudiwusava.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 8

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_off00006d4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4A 5244 bytes
SHA-256: 8c81d48d536a551e39860867ffae8cae18c24f9f94406ea261f24c1159a20c40
font_01_sfnt_off00007f3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F3B 10384 bytes
SHA-256: cdb02cfde4575a18bc301d9415463d2d27bff9989c04a6ba34caa011e709dbc3

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