Malicious PDF — malware analysis report

Static analysis result for SHA-256 155838832391e53d…

MALICIOUS

PDF

59.6 KB Created: 2020-08-20 19:44:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fae1e5f6bf8c8b254ee5a9ee34c47d20 SHA-1: a51cb62165540c617b03382efc31db928bb48a7d SHA-256: 155838832391e53d20711a80e2c0477d02dae0e6ccb994aa93b445dd0c0dacc3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector, ttraff.ru. This redirector is likely used to funnel victims to a phishing or malware distribution site. The presence of a link farm and a malicious redirector suggests an attempt to distribute malicious content or phish for credentials.

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=gramercy+property+trust+annual+report In PDF document text
    • http://files.theroverchasefoundation.com/uploads/1/3/1/0/131069887/baxelovinu_nozuxuduzas_fagezuxurumimav_laleb.pdfIn PDF document text
    • http://files.stmarksdurango.com/uploads/1/3/0/7/130740249/ruzuwagefawi-fumadup.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/1/0428/4101/4438/files/wegefexejifewolexuja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5710/9402/files/27256330571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0456/8252/4319/files/2156242100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6731/0231/files/72493270383.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/telugu_janapada_dj_audio_songs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/0166/9800/files/ielts_general_reading_sample_test_papers_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/taoism_holy_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2630/0575/files/80217856443.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6725/2641/files/2016821298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7839/3764/files/dovakonejinukogimavor.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 3

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_off0000a359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA359 5212 bytes
SHA-256: 2d61527f5b987212a3e5f050513623656bd48b34f0855dab8846fac188bfa3ac
font_01_sfnt_off0000b508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB508 14316 bytes
SHA-256: f81ab288d394239b489272de2fe59ae761e11e75ad6a40effc3c7e57249b1a7d

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