Malicious PDF — malware analysis report

Static analysis result for SHA-256 623ae4db026c0c3b…

MALICIOUS

PDF

40.1 KB Created: 2020-08-19 03:02:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75a03ce5dae34ff5294493e6a440700a SHA-1: 9cd7d5c2fb26e5dc9db58e3fac7a9ec77a1408c2 SHA-256: 623ae4db026c0c3b287ca8f4aef5b942faacb4a003a1b9cf38a17439851fec33
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service that is flagged as malicious. The document body and embedded links suggest a lure to download a datasheet, but the actual destination is a malicious redirector. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/pify?keyword=fluke+179+multimeter+datasheet In PDF document text
    • http://files.elizabethkpetersonlab.com/uploads/1/3/1/3/131384789/sibufajoj-xuvini.pdfIn PDF document text
    • http://pemapo.thereedmachine.net/uploads/1/3/0/7/130776394/3285039.pdfIn PDF document text
    • http://files.goodshepherdyouth.net/uploads/1/3/0/7/130739379/7647633.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/1/0435/1839/4523/files/99640523525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1447/0302/files/lipoduzuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3014/3395/files/viniwagokalinupiziri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1275/1523/files/30659295309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/expanding_tactics_for_listening_second_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zafitizeruzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/5109/3914/files/update_xbox_one_controller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0028/0726/files/battambang_map.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/bodumibivitisakofuwupud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8790/4422/files/73673713808.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_off00005d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D69 5372 bytes
SHA-256: 74c63e30988719414042340c1936fa59d9af85381ec7fd085139aa936069f334
font_01_sfnt_off00006f99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F99 10492 bytes
SHA-256: ef9478404721d2096d66a2dcb8a9ddb2e9f82b21607a0663a6a01b3407430dfd

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