Malicious PDF — malware analysis report

Static analysis result for SHA-256 67cb8a0c6ec22b00…

MALICIOUS

PDF

47.3 KB Created: 2020-08-05 03:34:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d430fb081970925c3d70b87bbc1de81b SHA-1: 536c709841d4ea724618da6b1539b45ce5bff6e3 SHA-256: 67cb8a0c6ec22b0060d57909df1e11a70d8ccf0caa0c3df7d584b4108005002a
194 Risk Score

Malware Insights

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

This PDF document contains numerous links designed to appear as educational resources, but they redirect to a malicious domain, ttraff.com. The document body itself is heavily obfuscated but contains the same redirector URL. This indicates a phishing or scam attempt leveraging SEO link farming techniques to distribute malicious content.

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/wb?keyword=nelson%20grade%2012%20biology%20textbook%20pdf%20answers In PDF document text
    • http://files.svplab.com/uploads/1/3/0/7/130739509/2c4fb5906.pdfIn PDF document text
    • http://files.makingwhatiwant.com/uploads/1/3/0/9/130969373/gumivixus.pdfIn PDF document text
    • http://files.azsmashersbaseballandsoftball.net/uploads/1/3/1/6/131606630/dazavib_rubefux_dekebokoto_zegijibixezuvuf.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/1/0427/7298/8071/files/8245645466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8999/3621/files/uc_davis_ship_waiver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8493/8402/files/84860763629.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0081/2952/files/grade_6_math_worksheets_ontario.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4982/6969/files/16620077739.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/ielts_speaking_and_writing_corner.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5637/3659/files/50068644811.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0392/7973/files/98549505834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/97495433690.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 7

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_off00006499.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6499 5828 bytes
SHA-256: 044f4123333be815bcfebadb28dd27d82a22ab9badfd5a8e8750e449cb1a0899
font_01_sfnt_off0000789f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x789F 2128 bytes
SHA-256: 4b6766ae8d6fe07f8c310a5d4f85c970c21a11d5bc8ab671c949517ecbacc24b
font_02_sfnt_off000081d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D4 14160 bytes
SHA-256: b67571c80c4e87800403eeb018efda1e55bcccb3dde1d8f18109da085f5024c3

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