Malicious PDF — malware analysis report

Static analysis result for SHA-256 4247680a34da27a4…

MALICIOUS

PDF

39.5 KB Created: 2020-08-22 02:10:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 99165e94654a3535a31df1d8444109e6 SHA-1: 8f377a2e7997af8aa0298d4d0c76deffca7f9800 SHA-256: 4247680a34da27a4846a4c94e858b2aec996373df4fbe62ae786513444260aca
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=buyer%2527+s+order+form+for+car'. This URL is presented within the document body, disguised as a buyer's order form, indicating a phishing or social engineering attempt. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content.

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=buyer%2527+s+order+form+for+car In PDF document text
    • http://files.fyldecoastplayers.com/uploads/1/3/1/4/131437775/xezepiwaposigamon.pdfIn PDF document text
    • http://repofage.thecarmaven.net/uploads/1/3/0/7/130776031/8610871.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/1/0435/9458/0136/files/monoprice_maker_select_plus_3d_printer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2622/files/bagarufoluzimitomiwevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8763/4338/files/8261966224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3550/8381/files/71764548873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1783/files/56783360778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/cardiopatia_diabetica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1045/6726/files/53405951795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/cognitive_approach_to_language_learning.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6867/files/sugugemexujasid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2745/6419/files/chordal_action_in_chain_drive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7237/1350/files/39421884519.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 3

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_off00005d72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D72 5320 bytes
SHA-256: fed35af70b22804c5aea1d7574400fb69b6f126c1534d569ce6c763097adc807
font_01_sfnt_off00006f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F81 9964 bytes
SHA-256: 2e33d03d73513ccf639acd822c56520b28ea96773178daf2718dcc036fd09690

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