Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4cb90b1657ec064…

MALICIOUS

PDF

52.8 KB Created: 2020-08-04 06:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f83aa6af02c547465e9fa7de95319ad SHA-1: 8eb410fbc118f8f41d32da052b64a89109d2c9a8 SHA-256: e4cb90b1657ec064416d77bb01bfd3f8d8571d2afb61f478636b63049a736e1f
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure for a PDF download. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the presence of a link to malicious infrastructure.

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=slayer+raining+blood+guitar+pdf In PDF document text
    • http://files.jazsminesaldana.com/uploads/1/3/1/4/131410167/88c3c4d0.pdfIn PDF document text
    • http://files.weymedia.net/uploads/1/3/0/7/130776110/5391857.pdfIn PDF document text
    • http://files.orbitalsocket.com/uploads/1/3/1/6/131637108/dekilonoroguzu-mofivemagiruv.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/1/0432/7433/8472/files/xitojijagetufiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/52217340113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/73759672746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/tafunadibopupapifeliroko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/aspen_pims_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1207/7206/files/10968576754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9315/5230/files/12378288637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9623/4400/files/32015497169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7037/4566/files/xejiluxuvumodawukuvol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5943/6968/files/78204023149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6213/2897/files/zogoxosaruvemujibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zugazad.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF0 5376 bytes
SHA-256: d24062d20b4d187ecda1313105549e020e09a1e1fc5525e064c0ec2dc9c21116
font_01_sfnt_off0000804e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x804E 15364 bytes
SHA-256: 354f170be4ce0bd6ed41262e78a711e37330a164cc89f1793150fec657159995
font_02_sfnt_off0000b039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB039 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e

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