Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c14fc67cb5652a…

MALICIOUS

PDF

56.2 KB Created: 2020-08-21 13:45:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 094c56448bee7914a21c0a680a7a9bf4 SHA-1: f0e09a92146383431580123d13da2ae4c70e5c7c SHA-256: 83c14fc67cb5652acaf7de19ae3f1d13b611ede677d9c1a727a113de52dd52b2
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically linking to 'ttraff.com' with a keyword suggesting a lure. The document body, though heavily obfuscated, contains the same redirector URL and benign-looking PDF links, likely to mask the malicious intent. The ML classifier strongly supports the malicious verdict.

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.com/pify?keyword=new+sad+song+2019++bestwap In PDF document text
    • http://files.confidance.com/uploads/1/3/2/7/132741535/kufigawetojov-zibexawijoneru.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/1/0433/4957/3784/files/the_cask_of_amontillado_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/foxujepanafajat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2548/9305/files/security_awareness_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3192/8730/files/nurokalixuruxen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2513/5776/files/tupaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1859/8038/files/jiniv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/6134185549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5996/6105/files/1715319637.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7566/6073/files/18904588875.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6481/1927/files/61461353757.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 4

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D43 5680 bytes
SHA-256: 609653632669bc8dd557c8107860e32c66b13e284dc2675926dfdc97e07d585e
font_01_sfnt_off000080b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B5 5636 bytes
SHA-256: 23ac4e74de395d6b4a8a47dfc3c370e79be8b04ee4b61faa0e3fe524b546049a
font_02_sfnt_off00009077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9077 13640 bytes
SHA-256: d3b489c9a7a8ec2dd3b00d085d4f0f97e449260de1993bf683c44d98986c97d2
font_03_sfnt_off0000bc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC32 16304 bytes
SHA-256: f08d5e04e6d0d7ea9e6d52ac9c3e5ab0ce0e26037e4561b37b1b212f7c2a14fc

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