Malicious PDF — malware analysis report

Static analysis result for SHA-256 310ddc8f614f59f7…

MALICIOUS

PDF

53.2 KB Created: 2020-08-19 00:41:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6f13b64dac55051891c2c7993f2cff0 SHA-1: 4ec7e7fb8353608c77ef9da9079faa9526a2191a SHA-256: 310ddc8f614f59f7983c8b5f3d1894e95a5d26aae5d6f10268ddfbe87f4475b9
194 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources, suggesting a link farm or SEO abuse tactic. One critical heuristic identified a link to a known malicious redirector, https://ttraff.cc/pify?keyword=atlas+anatomy+sobotta+pdf, which is likely intended to lead the user to malicious content. The document body, though heavily obfuscated, contains references to the redirector URL and other Shopify-hosted PDFs, reinforcing the lure of free content. No scripts were extracted from this sample.

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=atlas+anatomy+sobotta+pdf In PDF document text
    • http://files.solosprinter.com/uploads/1/3/1/3/131381352/6253256.pdfIn PDF document text
    • http://timumudit.autumnstewart.com/uploads/1/3/2/7/132712207/laxudiwowibaxoj_luvil_rupabumuxebu_xukorenu.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/1/0433/5543/9263/files/35982156680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2402/1664/files/76404642799.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3300/1126/files/rifebiregalojasetixi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1615/1455/files/70206214049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5136/8104/files/punaxoxuxew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9160/7190/files/70728235541.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/lezibumadokegebumipu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1218/6531/files/72498601122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xedatojif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/45914399196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.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_off0000928c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x928C 5320 bytes
SHA-256: 116bc66d1ca00954a6228869ed3e18e7d823d73e7e0d7fcb7efc59feaf94d8e9
font_01_sfnt_off0000a496.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA496 10392 bytes
SHA-256: 38649eb853e5003f776f3d430e56d8ff6d22d36e338111598404bb7e8b759c16

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