Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bbbb1c4f3beb226…

MALICIOUS

PDF

44.3 KB Created: 2020-07-31 22:32:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2230dd4a37575ee72d68ced7c9cfd23 SHA-1: fabf84ffc240195481e1fc3dcf02f258e1714298 SHA-256: 7bbbb1c4f3beb226829861d51f2d764cced403cea5a9dd90c5c397fb21cf84bb
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, which is indicative of a link farm or phishing campaign. The primary link, 'https://ttraff.cc/pify?keyword=customs+broker+exam+study+guide+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users into clicking it under the guise of a study guide. No scripts were extracted, but the presence of embedded URLs and the heuristic firings strongly suggest a phishing or malicious redirection attack.

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.cc/pify?keyword=customs+broker+exam+study+guide+pdf In PDF document text
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdfIn PDF document text
    • http://files.lynnwoodheating.com/uploads/1/3/1/8/131856446/tezume_saboti_wavek.pdfIn PDF document text
    • http://files.hunterella.com/uploads/1/3/0/7/130775108/9d0cf2ffab4.pdfIn PDF document text
    • http://files.lovefeastgathering.com/uploads/1/3/1/1/131164081/2211740.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/1/0430/0092/2261/files/wuvazebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/patisokuvenur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9543/2099/files/38759458795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/19524384479.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8618/3576/files/wezenit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9217/3217/files/8056902827.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4645/8776/files/32557973696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9740/0223/files/48468935136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/gevemofilibakonila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/fulevumarafutorotenepad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/58580374151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1916/6105/files/xejuwidulubelasoruwobibob.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_off00006de5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE5 5608 bytes
SHA-256: cceb231a8125c4f42653d88121a757d0ea9bd780edcea9131c6a2c8fe3c2cd37
font_01_sfnt_off000080ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EC 10540 bytes
SHA-256: 612bf07d2adb059ada20630f455029332f9c8e9e0ae46d6ae70fca63de9344e1

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