Malicious PDF — malware analysis report

Static analysis result for SHA-256 7adf48755fe23dfe…

MALICIOUS

PDF

42.9 KB Created: 2020-08-24 01:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bf4b5cb1c3984d74cad22c0080e535e SHA-1: d44af38710274898e6f2985fa3d058d904ea88cd SHA-256: 7adf48755fe23dfe24710dac9557714cefba776deed43a1d6a889a87088406d3
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.ru/pify?keyword=birthday+wishes+for+husband+song', is presented as a birthday wish song, likely a social engineering tactic to entice clicks. The presence of a large number of external PDF links suggests a link farm or SEO manipulation strategy. 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.
  • 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=birthday+wishes+for+husband+song In PDF document text
    • http://files.englishin6months.com/uploads/1/3/1/4/131453329/9e92b1edf7f12.pdfIn PDF document text
    • http://files.katyitter.com/uploads/1/3/1/4/131438313/relotufimowemuf.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/1/0432/3488/5789/files/97694582079.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9699/7030/files/wesopokezenabugisimunot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9806/2501/files/lofopexikepasivitix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/7596/8662/files/esl_expressing_likes_and_dislikes_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9496/6436/files/wodob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6743/1320/files/vemimemezizixonakig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2707/1127/files/rojudigetivuvironitanoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79086372433.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4016/2470/files/41666895714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3626/2052/files/abaqus_theory_manual_6._14.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/mage_tower_guides.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_off00006873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6873 5520 bytes
SHA-256: b2961a1afc26bd505094a170d0b4727e1adccc221e75ea8db94ba70eab8cda66
font_01_sfnt_off00007b4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4C 10316 bytes
SHA-256: dda025c82e79393a98b0900eb85631a1476d5d967aea8f677790ad9ecd81f8b2

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