Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c7e985a1c9e6053…

MALICIOUS

PDF

38.3 KB Created: 2020-08-11 01:05:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b28cc74f9a287e0b9361bbf1850321b4 SHA-1: 2e789dacafa4b9bd7b6d932b54fd53bea494fb79 SHA-256: 4c7e985a1c9e60536ab2098a6ad2b23ab403bd57cf7fb21b599086f2bb803e94
194 Risk Score

Malware Insights

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

The PDF contains a link disguised as a car owner's manual that redirects to a malicious URL. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external resources, many of which are hosted on Shopify. The primary malicious URL identified is ttraff.com, which is flagged as a redirector. The ML classifier strongly indicates maliciousness.

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/wb?keyword=2011%20hyundai%20getz%20owner In PDF document text
    • http://files.liira.org/uploads/1/3/0/8/130813639/woxudoli-velozi-wugipoxim.pdfIn PDF document text
    • http://files.frvincehuber.com/uploads/1/3/1/4/131438891/dosuv.pdfIn PDF document text
    • http://rojogote.billsenglish.com/uploads/1/3/1/4/131482976/4965858.pdfIn PDF document text
    • https://ttraff.com/wb?keyword=2011%20hyundai%20getz%20owner's%20manualIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2936/3878/files/11646517173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/tidamijipepodagatafotobu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0625/4494/files/apj_abdul_kalam_essay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7786/7422/files/vakomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2195/9325/files/fusionner_des_fichiers_sur_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6678/5949/files/1082838963.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/3452575908.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/sajijepirodixomoxifuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67279733654.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8905/2316/files/fanowopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6638/2746/files/tiwedupupudutepukutarame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8553/7175/files/nojifibaliji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/garul.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_off0000475b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x475B 5628 bytes
SHA-256: 9194731f6d1b06ee5cc41f4707a48319d04326bcdace2618d475885756ec6191
font_01_sfnt_off00005a6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A6A 10048 bytes
SHA-256: e5721d9e59177a13159a9b7a66958d709c3f6fba993b37a358d770fb02e48ab2
font_02_sfnt_off00007c98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C98 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333