Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0ed0fe62951b58…

MALICIOUS

PDF

43.8 KB Created: 2020-08-20 20:49:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1e0b091365d1f0e4a6c0771f5843ea81 SHA-1: b8f5a15951d846b1907488dc3331329c9f60c593 SHA-256: 8b0ed0fe62951b58dcd366ce13bd2c629e8b862257c14db01bdf7375afa2d5f3
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm. One critical heuristic indicates these links point to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=4gl+informix+tutorial, which is likely used to redirect users to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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=4gl+informix+tutorial In PDF document text
    • http://mojijagog.wayzatafarmersmarket.com/uploads/1/3/1/0/131069806/rarex.pdfIn PDF document text
    • http://tefefu.aronrobertsoninsurance.com/uploads/1/3/0/7/130776688/digez.pdfIn PDF document text
    • http://files.streambig.net/uploads/1/3/2/7/132712514/0f925847.pdfIn PDF document text
    • http://zisafeza.jakyoga.com/uploads/1/3/2/6/132696056/sajaxitar_putibex_mazibogobavufu_fudapasemixa.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/1/0433/0536/9758/files/87973283438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8039/3639/files/inorganic_chemistry_full_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/29775810434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9923/5228/files/27439265228.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2991/1957/files/approximation_mathematics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3444/1885/files/gta_5_jtag_mod_tool.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51025654711.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/22478018084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/oxford_advanced_learner_s_dictionary_ninth_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1988/3928/files/pusodijipigidurovijama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4184/0535/files/10649068583.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_off0000655d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x655D 4968 bytes
SHA-256: 58f011b570145d080287a836b68a60d1de67dbfeba628e5aa0dd5340e1e110da
font_01_sfnt_off00007638.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7638 14024 bytes
SHA-256: 065b2f9da68f4433f4d2ac9b75462a5493a7efa47367773fff180c78f6b983c0

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