Malicious PDF — malware analysis report

Static analysis result for SHA-256 2043d743fed90711…

MALICIOUS

PDF

48.0 KB Created: 2020-08-08 18:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e2a1948a63047873791ab5765b958db SHA-1: 80dedce1bccba76b0d09b95a6e6e824d92e9e6a6 SHA-256: 2043d743fed90711d706af9b12e60d207f634a493ed3f51a81f621c58b896268
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a mass external PDF link farm, suggesting the document is designed to manipulate search engine results or distribute further malicious content. The primary malicious IOC is the redirector URL.

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=principles%20of%20uncertainty%20maira%20kalman%20pdf In PDF document text
    • http://zemuzovug.chest-messages.com/uploads/1/3/2/6/132680813/zajapexepelagumadoj.pdfIn PDF document text
    • http://files.wandering-mom.com/uploads/1/3/0/7/130738700/dadojabujow_wivonivulinodus_kanese_dotuwu.pdfIn PDF document text
    • http://files.laceytezino.com/uploads/1/3/1/4/131437619/9235d33df23.pdfIn PDF document text
    • http://jivato.sarexplorer.com/uploads/1/3/0/7/130775918/939f14ee7.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/1/0432/7348/6496/files/59205362331.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1391/5303/files/degorozonibu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4835/3442/files/91712441412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9631/7845/files/susukomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/gopimaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/somufedigok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1705/0008/files/vuxusujelupitogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0873/6928/files/17014064157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8499/7017/files/xafoxararuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4389/8019/files/debexutafagudapixadimu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5556/2398/files/36256432224.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8387/3942/files/pioneer_avh_x2800bs_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/vojukigodax.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 4

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_off00007d47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D47 5468 bytes
SHA-256: 3e69f7bd9b7e323e87a06b1a2ed7110b17331f345417a6d31c2f683c18ab9bf6
font_01_sfnt_off00008fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD3 10164 bytes
SHA-256: c109571fccaca8b90e14a44ca354d867c890731324f6b6a3a4c1773441515a74

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