Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d399dbf460f5e8…

MALICIOUS

PDF

37.1 KB Created: 2020-08-02 00:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9ec19851d28a21a1b6107c9ce9c45e6b SHA-1: e7812e65c47b613d800ab1206ed306d899a81a77 SHA-256: a7d399dbf460f5e898184f8d98f2860ec79656c933fd013b069f0a3e50d1cbae
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The ML classifier also strongly indicated maliciousness. The embedded URL 'https://ttraff.cc/pify?keyword=git+flow+init' is a known malicious redirector. The document body, though heavily obfuscated, contains this URL and numerous other links pointing to shopify.com and other file-hosting services, suggesting a large-scale distribution effort.

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.cc/pify?keyword=git+flow+init In PDF document text
    • http://files.literarypubcrawl.com/uploads/1/3/0/8/130815303/wabapiwitoze-fezodiketa.pdfIn PDF document text
    • http://files.brataussies.com/uploads/1/3/1/3/131379894/taronurenowo-furuzixowok.pdfIn PDF document text
    • http://files.sharpeningdoneright.com/uploads/1/3/0/7/130740412/23bf8.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/1/0428/5651/3692/files/orange_county_soundtrack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9162/4096/files/3185593539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3663/8360/files/sword_art_online_novel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/60548386529.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1613/4562/files/lurekalafuzeru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3055/9390/files/memobisitaruzeteko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2959/2214/files/sigmoid_function_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/kozesegegolizazu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1530/6405/files/15810762055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/4500285326.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6860/8927/files/pdf_squeezer_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/fiwerimuxuk.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 5

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_off00005616.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5616 4400 bytes
SHA-256: c4210a08e615c9b1310358f4f9275a889f27ea54c36cf0b7c038b0311a278aea
font_01_sfnt_off0000653a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 10172 bytes
SHA-256: 6731b18e07827b8d46605af5042fb26cf13e58815ed4f58d2192b9260c98b358

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