Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0945e11681b55a2…

MALICIOUS

PDF

55.8 KB Created: 2020-08-06 00:29:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 19ec700bf0c600db62a177600a763f36 SHA-1: e7bd832fff5c52671ed1a58793a997fe6a02276c SHA-256: b0945e11681b55a2087005efb27199411c65d9fe89453562042b4dbbf74ebbd7
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, contains text that appears to be a lure for an 'esl adjectives worksheet pdf'. The ML classifier strongly indicated maliciousness, and the PDF structure includes a mass external link farm, suggesting a phishing or redirection campaign.

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=esl+adjectives+worksheet+pdf In PDF document text
    • http://files.lvccpp.com/uploads/1/3/1/1/131164185/sutenoto-xovad-zujevam.pdfIn PDF document text
    • http://files.8trackbooking.com/uploads/1/3/1/4/131407530/kutudixusokoginavu.pdfIn PDF document text
    • http://files.stu-art.us/uploads/1/3/1/3/131383283/7498380.pdfIn PDF document text
    • http://files.friendsoftimbercrest.org/uploads/1/3/2/6/132681757/sexiwebadega.pdfIn PDF document text
    • http://files.battersboxchicago.com/uploads/1/3/1/6/131637853/finaxuxe.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/1/0429/5540/7511/files/99318835794.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1288/1564/files/cracker_barrel_lafayette.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4990/9415/files/99362056029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3636/0351/files/98743375881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0255/2742/files/39282287486.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67331216746.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3271/5163/files/vaborix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4653/files/20458127305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3504/1693/files/91567692913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/4_hour_work_week_full.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_off00009b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8A 5492 bytes
SHA-256: c72cc54b562e31ba2d6e59be3c4b73a2e88a33a43ff28934f1367cba32f45c5e
font_01_sfnt_off0000ae51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE51 10412 bytes
SHA-256: 6c7db8d3d8c49c2dcb8f0005a78a53ac4c681e48c69e7379705d6d88e9ea32a3

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