Malicious PDF — malware analysis report

Static analysis result for SHA-256 a38acef34156fec6…

MALICIOUS

PDF

45.0 KB Created: 2020-08-19 04:00:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1f8cf33c3038a4ddaffb367fbce058b0 SHA-1: 7e75f93e45afc8a8d2ca236740e464bb8cb5043a SHA-256: a38acef34156fec638ecf8d815831694ba46fd689cb996d891b378e63deedbf9
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=bad+blood+book', suggesting a lure to a malicious site disguised as a book download. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or redirection attack.

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=bad+blood+book In PDF document text
    • http://files.britttanya.com/uploads/1/3/1/6/131637135/7b05187c.pdfIn PDF document text
    • http://files.shamansspirit.net/uploads/1/3/1/4/131407148/1158657.pdfIn PDF document text
    • http://files.hinksoncompany.com/uploads/1/3/1/3/131379054/rodurekufixugubegep.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/1/0436/1230/7618/files/vapuvoxogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7124/2389/files/zenanigilabofonoliwetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xazijejizamoketabuguta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/2475234380.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1961/5901/files/caterpillar_service_manual_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5698/8317/files/usarec_manual_3_0.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5058/1662/files/american_psycho_movie_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1873/2191/files/regedazutegewigiwinizapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/pudibakavave.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0840/1316/files/vodepalevipagikukir.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_off00006fa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FA8 4796 bytes
SHA-256: 784034630de39c6b173c13afb3ffe308e614cc9aa75b6c91ccb05eb42856ddde
font_01_sfnt_off00008009.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8009 13964 bytes
SHA-256: 368eaecc2e2eaf98d9c143ae8b46a8d574d12d220ac39b81d5a734aa5744c17d

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