Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f7885023d28bf5…

MALICIOUS

PDF

43.5 KB Created: 2020-08-25 07:06:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93c2ec19caee623d868c2398f3b25c48 SHA-1: 645b9767246725cde6fac8e72813d230cca5b138 SHA-256: 13f7885023d28bf5ce2120485e327343c88adb443f08767ada87d6586304a740
194 Risk Score

Malware Insights

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

The PDF document contains embedded links that lead to a redirector service, which is a common tactic for phishing and malware distribution. The document body, though heavily obfuscated, contains text referencing 'Aflac sickness claim form pdf', suggesting a phishing lure. The presence of numerous external PDF links, many pointing to Shopify, indicates a link farm designed to obscure the ultimate destination and potentially spread malicious content.

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=aflac+sickness+claim+form+pdf In PDF document text
    • http://files.drivertraininggoforit.com/uploads/1/3/0/7/130739686/17e1fb690a7338.pdfIn PDF document text
    • http://baralo.reisitellimused.com/uploads/1/3/0/7/130776031/rulova.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/1/0432/6404/9318/files/caesar_cipher_in_cryptography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7716/3416/files/webepuvedinovaxijixen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9834/files/6094072232.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/89942601115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5324/3816/files/90944220515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3333/7768/files/winesisizowuxeladaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8368/5270/files/82586440607.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0460/1502/1223/files/41192118553.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0641/9367/files/enough_adjective_noun_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7409/2198/files/jutupuvagaxoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/71305446280.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_off00006b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B1C 5356 bytes
SHA-256: 5908f7e3838af9f4b1cb5512d484d649d5fb1eb716a25347b46a8f918c229ccd
font_01_sfnt_off00007d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2E 10484 bytes
SHA-256: 0d2d9004fb77402aa494e0c396dafa5e2f683bd4ac7d10ab816d294dcf6ee2af

Open this report in the interactive analyzer, or submit your own file for analysis.