Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb30b178feb974a…

MALICIOUS

PDF

39.0 KB Created: 2020-08-09 16:49:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f2bbb8747980ef6cd3772e56b17791b2 SHA-1: 369c1833243ea1c5f9ebdf3077ede80fbda2526e SHA-256: cfb30b178feb974ae3249c0afb6d683eef66debbc6972518aaf10e6673cd2a91
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it is the primary lure. The presence of numerous other links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious payload. 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.com/pify?keyword=adding+and+subtracting+fractions+and+mixed+numbers+word+problems+pdf In PDF document text
    • http://xekepad.roundbay.com/uploads/1/3/1/8/131856917/gosokomo.pdfIn PDF document text
    • http://files.themissingprincess.com/uploads/1/3/2/6/132683168/4328186.pdfIn PDF document text
    • http://files.lavanyahealing.com/uploads/1/3/0/8/130813829/wotatidatonume_gapad.pdfIn PDF document text
    • http://files.schec.net/uploads/1/3/1/8/131871894/6851944.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/1/0431/2789/8268/files/60048838520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3671/2861/files/90874752974.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0068/1880/files/map_of_us_states_and_capitals.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8388/8808/files/49791311084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6187/9719/files/air_pollution_control_a_design_approach_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1315/2673/files/fosumutodaxaximefujelib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1153/8072/files/advance_map_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7441/0910/files/ruralusifanutajonotijad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/54886019731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/juicy_stakes_poker.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5067/2026/files/jegaxa.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 8

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_off00005705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5705 5764 bytes
SHA-256: ee4fd7ddffa23b2c87bf2bc137ad95a5ad0de4aaa5c26e9cb4725cb13e19a5a8
font_01_sfnt_off00006aa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA9 10512 bytes
SHA-256: d7603523d6e50bdabfc2fda8d183eba50ab8561d3c7db2ede0a2a9c723fecbcc

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