Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcfa583f2874d3d6…

MALICIOUS

PDF

46.7 KB Created: 2020-08-13 22:42:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 578f2bce9e94808ea2b50f0c72336125 SHA-1: 3467f0089f34340cfc5d7206a0098446170e8177 SHA-256: dcfa583f2874d3d64ab8d7d0af1b239816919e0111eaa736954afbcebf6c8a0d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic identified a malicious redirector link, and another flagged the document as a link farm. The primary malicious URL is https://ttraff.cc/wb?keyword=tamiya%20monster%20beetle%20manual, which likely serves as a lure to a malicious site. The document body contains garbled text but includes the malicious URL and several benign-looking Shopify URLs, suggesting an attempt to mask the malicious intent.

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.cc/wb?keyword=tamiya%20monster%20beetle%20manual In PDF document text
    • http://rabikigib.singing4ourlives.net/uploads/1/3/0/7/130774993/5329123.pdfIn PDF document text
    • http://files.secretspartanburg.com/uploads/1/3/1/3/131380342/bamiximexizezurufar.pdfIn PDF document text
    • http://files.ebonydeecheyne.com/uploads/1/3/1/4/131437566/gonupufore.pdfIn PDF document text
    • http://files.runnerwithin.com/uploads/1/3/1/3/131381078/rononogavo.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/1/0438/4600/8982/files/legion_tailoring_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/rimatizepukupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3880/1061/files/tofugamowarizone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8674/8579/files/70044030750.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9691/4586/files/pukisufukanirame.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/tiniw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/moxudenolaruxorurafugi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2944/5273/files/tung_s_orthodox_acupuncture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7157/8007/files/3292973084.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2408/0282/files/70132748752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0201/files/98310423854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/16661893196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/66100172465.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_off00006b36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B36 5020 bytes
SHA-256: c716372de67ecf0a1dfeff5509506ad74d3df6d53ddb4e64d8d69fb32f727235
font_01_sfnt_off00007c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C36 15392 bytes
SHA-256: cc31cb13a178dc8c9130db5be9f0e32b7f4965f515989097fee7f02b8f7f0376

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