Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b6e4fc2209e84e3…

MALICIOUS

PDF

61.6 KB Created: 2020-08-24 17:48:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19e3b2d2d32beaba1ea979ddff505104 SHA-1: 6f0312414381e02b9e3269c34114bdf5d51b938c SHA-256: 1b6e4fc2209e84e31180eb125b4e1ec77417e729745ce287f1e75442e896f941
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the primary one leading to the identified malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the lure. The ML classifier also strongly indicated maliciousness.

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=consumer+reports+top+car+seats+2018 In PDF document text
    • http://files.katiekittrell.com/uploads/1/3/1/0/131070723/a3a603cf61.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/1/0428/4959/9651/files/commutative_algebra_books.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2773/2379/files/4872916385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0818/0895/files/30114269038.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5390/6080/files/xonoperi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9715/1904/files/antidiabetic_activity_of_medicinal_plants.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0900/4952/files/mabulolanolawelik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2269/6098/files/xslt_transformation_java.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64255738852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4819/3439/files/fenoduvigipolopirobufe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1179/3315/files/20235358327.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0835/files/xexixunalikiga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8998/3643/files/fs1_undisputed_podcast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6764/9698/files/chrome_web_store_ios.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 2

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_off0000b322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB322 5472 bytes
SHA-256: 34ac55716bf0c869fbd0f4d0019f759a6f7da13baf3de6a8318dd060247fe0ad
font_01_sfnt_off0000c59d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC59D 10448 bytes
SHA-256: 118333980607d0feb8f22dfb980e0f82a7de1db37dda21d82d5434b060a1a075

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