Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e13038a204988f4…

MALICIOUS

PDF

37.7 KB Created: 2020-08-15 04:18:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1ce0515c9fdeec9c79389d37acd3ef9 SHA-1: 6138d5233597214cfa6f4406979f6831c92d970a SHA-256: 3e13038a204988f4828f833eba3a06152320884adf4eb993cc7114ac7d4b071a
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the primary malicious URL. The ML classifier also strongly indicated maliciousness. The overall pattern suggests a link farm or SEO poisoning attack designed to redirect users to malicious sites.

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/wb?keyword=polaroid%20tv%20remote%20manual In PDF document text
    • http://files.myrtle-beach-speeding-ticket-lawyer.com/uploads/1/3/0/7/130740053/fbcaaeeb098.pdfIn PDF document text
    • http://files.vitalenergy.life/uploads/1/3/2/3/132302970/nubam-siwogivez-fewukabewalo.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/1/0434/1671/5429/files/44868467015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/sqlalchemy_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/titulagaxipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9945/4628/files/bepigejudifidosegeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9926/8003/files/83274591187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0165/1105/files/21209550177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6280/4136/files/dialysis_catheter_infection.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8799/5814/files/tikerobetepamokateren.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/tijefusogamoto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/kinalolabi.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_off0000567b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567B 4856 bytes
SHA-256: 301101dc6480a117e0c9d717790cba51ed90a9a1ad98d8b9751366f63622f830
font_01_sfnt_off000066e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E6 10476 bytes
SHA-256: a9bf98b76b1aa77f1c77eeafd02a94bd50be9108448599b6240181e25052a7d1

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