Malicious PDF — malware analysis report

Static analysis result for SHA-256 3301ddeedd405b70…

MALICIOUS

PDF

38.6 KB Created: 2020-08-07 12:39:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c656c7769dad4456cbb02411f12d2ed3 SHA-1: 2d1c52329a3e5ab051e88a81f8364552e598c9f8 SHA-256: 3301ddeedd405b70425feba1487b1394e2921e6efaa1dbb560381192e13a9bf9
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external content. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-optimized PDF links further supports a malicious intent to drive traffic to potentially harmful sites.

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=bayesian+networks+with+examples+in+r+scutari+pdf In PDF document text
    • http://files.irishshepherdshuts.com/uploads/1/3/1/1/131164023/dakiropamol_xifofuxok.pdfIn PDF document text
    • http://wuzonapan.wildaboutchristmas.com/uploads/1/3/0/9/130969656/50266dd7902.pdfIn PDF document text
    • http://losopilok.michaelmattoongolf.com/uploads/1/3/1/6/131606201/xunubuvagojozepav.pdfIn PDF document text
    • http://files.joblakely.com/uploads/1/3/1/3/131384113/topikarete.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/1/0430/8375/9765/files/gold_gym_exercise_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6286/0699/files/l_alphabet_grec.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0678/6725/files/marvelous_designer_6_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5855/1189/files/32466260919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4588/6884/files/sejarah_penjajahan_portugis_di_indonesia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/96226605796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6876/7907/files/crhp_manual_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3123/9588/files/28351323128.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1172/5723/files/18269038786.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 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_off00005779.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5779 5772 bytes
SHA-256: 9536b1e2e05397c7500526f69c1accf6ddfa27e75a11ce5cf1ee9a871b9c0bc2
font_01_sfnt_off00006b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B14 10036 bytes
SHA-256: 43e95050e4594ab2f3a017c63eae60c46efd4945ca35ea9203af461b4de8d937

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