Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cb603a8eff12c17…

MALICIOUS

PDF

45.9 KB Created: 2020-08-24 04:13:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6576fe79fc8f8402ab2239d893e93a0a SHA-1: 53c5634c6bd08f7fcb78eb7f0accd4afb7f74143 SHA-256: 0cb603a8eff12c17098f750b0319622b02768db2407b1c17c5b053bd82453392
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to an SEO redirector service ('ttraff.com') that is flagged as malicious. The document body, though heavily obfuscated, contains text related to 'printable impulse control worksheets' and the malicious redirector URL, suggesting a phishing or spam lure. The presence of multiple PDF links and the ML classifier's high confidence score further support the malicious classification.

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=printable+impulse+control+worksheets In PDF document text
    • http://files.hypnobabiescoloradosprings.com/uploads/1/3/1/4/131437225/genezadulapi_zowoxafi_sudev.pdfIn PDF document text
    • http://files.markgordonglass.com/uploads/1/3/2/6/132682852/6905680.pdfIn PDF document text
    • http://files.kkmediation.com/uploads/1/3/1/3/131379894/4c2c255974.pdfIn PDF document text
    • http://files.trendclothinginc.com/uploads/1/3/1/4/131437523/xarusi.pdfIn PDF document text
    • http://files.firefighterrescuesurvey.com/uploads/1/3/0/8/130814644/acb387e833b8.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/1/0434/6265/6157/files/lufomikezodavi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4231/4152/files/2169752794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3604/7525/files/73651608908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9102/5303/files/fefuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/17844710077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4044/0471/files/44823590915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/waguxubojopofivinadovoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8922/3066/files/lezavuvefefemuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7234/8579/files/69496893349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/6228/4703/files/bending_stress_problems_and_solutions.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_off00006ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EF7 5468 bytes
SHA-256: c98e7fa9cc031769abe4c57e9bbcca50ce7ac456620a6b7dab7868a7e19103e5
font_01_sfnt_off00008169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8169 12096 bytes
SHA-256: 30b10b8e895591a68a317c6956285fc696f8a3e3d5460b90d3b9a41fa8ab6570

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