Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a05a9cca13b868…

MALICIOUS

PDF

35.5 KB Created: 2020-08-11 09:36:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 071aa6483bd19971f79037a0aba87004 SHA-1: 1935c7992825be61d85e8899f4647bc943287c82 SHA-256: a9a05a9cca13b868c4591fe466ac4fcbab84548ccd25e21c108a007b694fe36e
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm designed to redirect users. One of the primary links, 'https://ttraff.ru/pify?keyword=pdf+yasin+sharif', is identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains garbled text but includes the malicious URL, suggesting an attempt to disguise or obfuscate the malicious intent.

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=pdf+yasin+sharif In PDF document text
    • http://files.nhlogcabinrental.com/uploads/1/3/0/7/130739463/papuwudusu-kizegagare.pdfIn PDF document text
    • http://xotusak.rainorshineweddings.com/uploads/1/3/0/7/130739625/ec4d9a0.pdfIn PDF document text
    • http://juvavas.techniprodec.com/uploads/1/3/1/4/131438405/wovinilavuvega_makegusupe_wojufijipasese_jerumavivu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4072/6427/files/a_to_z_dream_dictionary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2893/7880/files/ipomoea_aquatica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2412/0984/files/78342553718.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5435/1015/files/the_beekeeper_of_aleppo_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4214/2358/files/la_apologia_de_socrates_gredos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1298/8821/files/candido_ou_otimismo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/81570632619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1035/8423/files/variable_frequency_drive_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/60384023974.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 7

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_off00004479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4479 4548 bytes
SHA-256: d496819b3ad2ff53ae56cffb3d46dba156a1a2fc1a1566b9e4ddde9a549ec53d
font_01_sfnt_off000053bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53BF 9300 bytes
SHA-256: d1df7a2559767e450e2ac8664c470a94f4288973e19f57d519d68598f9d06ef7
font_02_sfnt_off00007391.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7391 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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