Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb825bc8a48bfe0b…

MALICIOUS

PDF

39.8 KB Created: 2020-08-16 16:56:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49f396acf70f80cf28bfb9c7552b2017 SHA-1: 98ddc36aea64362c4203740ab02a3a631eeb90bd SHA-256: cb825bc8a48bfe0bf600d0504b1e30eb4d48853f6f12e17ab31af4f8465d7bb5
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be part of a SEO link farm. The document body, though partially corrupted, contains text related to a 'Ryobi door latch installation kit manual' and the malicious URL, suggesting a lure to trick users into clicking the link. The primary malicious URL is ttraff.cc, which redirects to a Shopify hosted PDF, likely as part of a multi-stage redirection or SEO poisoning tactic.

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=ryobi+door+latch+installation+kit+manual In PDF document text
    • http://dudonu.laurarodriguezphotography.com/uploads/1/3/1/4/131438025/42aa8a3.pdfIn PDF document text
    • http://nokonuf.sanjna-r.com/uploads/1/3/2/3/132302782/xixuxopovitezibuwo.pdfIn PDF document text
    • http://files.sarahthurstensondesign.com/uploads/1/3/1/4/131407692/xavejosur.pdfIn PDF document text
    • http://zivej.greenbushhistoricalsociety.org/uploads/1/3/1/4/131483154/zudokuzukilukase.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0435/9805/3539/files/28872298195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/appendicitis_complications.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/dutirizerivagagonimatoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/is_it_love_matt_answers_chapter_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1592/0024/files/apple_tv_2_remote_app_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/physics_book_9th_class_punjab_textbook_board.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4537/0521/files/60532106167.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3769/5906/files/zavewopebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/11623983251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jomanumono.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/96488830941.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000054e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54E0 1724 bytes
SHA-256: 90fb1042126c15d8a796f6f88dc26108755fb6ca519e05b6d0de05ca6d3d969f
font_01_sfnt_off00005d6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6A 5492 bytes
SHA-256: 6464047398b0f6fb0f83bb4f6a706b6b09b7b639aa75509ecc80370ed2ba44a4
font_02_sfnt_off00006fde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 10032 bytes
SHA-256: 1635b9c3157c25e7f5f6a2f7e6111f625100bb17c81dde7a67a044b5b7b52d18