Malicious PDF — malware analysis report

Static analysis result for SHA-256 7315915e32c28c80…

MALICIOUS

PDF

53.6 KB Created: 2020-08-14 02:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c14e6534ac494df5008a494f7c48a8bc SHA-1: 7a2bae8d7957e6eea1607ce9062e6ab1a447e6b7 SHA-256: 7315915e32c28c80e8b239e90819d7bd1629efd92a94d9bef9813a9d8a148a5a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.ru) identified as malicious. The document body and heuristics suggest a lure for free downloads or information, which is a common tactic for phishing or malware distribution. 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.ru/pify?keyword=a+d+c+a+computer+full+form In PDF document text
    • http://files.1poundchocolateartscollective.com/uploads/1/3/1/0/131071277/zunupovapewive_xaguzesof_nibixoxekefu.pdfIn PDF document text
    • http://wuratiwik.dssala.org/uploads/1/3/1/4/131482993/7651986.pdfIn PDF document text
    • http://files.petalcup.com/uploads/1/3/1/3/131398479/gebober.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn 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/1/0432/4291/3955/files/fitness_assessment_form_personal_trainer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1290/7427/files/83752130971.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tozonolemudafolafoxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4986/8712/files/35239273077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6997/2384/files/8947771006.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2126/0184/files/romeo_and_juliet_balcony_scene_script.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/67702731873.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6354/8833/files/66001698862.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/sipewitakara.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9762/9596/files/99489667833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9623/5415/files/zezoxenulavuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7318/3637/files/19449596035.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off0000aae8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xAAE8 9584 bytes
SHA-256: 41a78c0fc56cf155b7a4491df984fa9da9ab713ef2dd13831e51daf65eb17f9b
font_00_sfnt_off00006bcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCF 5112 bytes
SHA-256: 82dc263bfc74a965b7369a0d35da99017a97d08f6dab7d30f0d0ef45b5d1ec25
font_01_sfnt_off00007d1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1A 14756 bytes
SHA-256: 7048aa90b57236c20126fe34ea1353d4e1b986534f43f5eec96e76020d7e6b2d

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