Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0930ee1bd9c09f…

MALICIOUS

PDF

47.5 KB Created: 2020-08-14 06:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7c45cda9ff502a178ab534b266aed2f0 SHA-1: 306c3fc0b3b005e10f7dae4c6a652ea7758dacb1 SHA-256: 4a0930ee1bd9c09fbf9015fb49afa87c9b3c71b74820bf33919baa5ba953756a
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.ru, which is disguised as a link to consumer reports about used cars. The file also contains a large number of embedded links, many of which point to cdn.shopify.com, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains the target URL and a reference to wkhtmltopdf, indicating it was likely generated programmatically.

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.ru/pify?keyword=consumer+reports+top+used+cars+under+10000 In PDF document text
    • http://files.maloofroofing.com/uploads/1/3/1/3/131379639/bemarevasijetadusa.pdfIn PDF document text
    • http://kupunas.nyabuoy.com/uploads/1/3/2/7/132740285/sikagok_nuvudadi_fopupezebed.pdfIn PDF document text
    • http://files.pleasuresilb.com/uploads/1/3/1/8/131856706/jakof.pdfIn PDF document text
    • http://files.illinoisequinefieldservice.com/uploads/1/3/2/6/132681194/nefuvi-sonekibexorobub-regunotel.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/1/0437/9551/3505/files/1204922301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6898/0377/files/bupunejuwatinagewunok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5111/4908/files/sugolexenelubolija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4909/8148/files/90916522058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0449/3987/files/fusorokezapuvenalipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7848/3096/files/bumarumuxuwimuxojamagupez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4872/2851/files/86616881239.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9982/4032/files/duveweropagotoponu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6550/5952/files/38769028021.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1384/0793/files/vafolakefanomur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/61839756122.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0881/1427/files/basic_html_index_page.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8299/7141/files/character_sheet_5e_fillable.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_off00007b08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B08 5288 bytes
SHA-256: 64a2522d43dafad93e490cec51e04da54c3b3f8c281746c6d15cabf780c6409f
font_01_sfnt_off00008ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE0 10376 bytes
SHA-256: 6c59a6629c257f9044c01f78fadbc3bb7085bdec47e3899efda6188cb33c970d

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