Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f60e645ffeb6914…

MALICIOUS

PDF

36.3 KB Created: 2020-08-18 20:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34da4321b0c057efae679a0f6e6f1ac8 SHA-1: d20a89eabb244b7bbd5044c48da361f9e59fc090 SHA-256: 8f60e645ffeb69148139e80cab60fda98b50c30b5200dc6dac79e708962e0172
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a redirector service, which in turn leads to a link farm of other PDFs. The document body, though heavily obfuscated, contains text related to 'Logo quiz world answers level 8', suggesting a lure. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm designed to distribute 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.ru/pify?keyword=logo+quiz+world+answers+level+8 In PDF document text
    • http://dofap.challenge2grow.be/uploads/1/3/0/8/130873998/fujiwesotafa.pdfIn PDF document text
    • http://xusivuvil.thesilvergoddessjoanib.com/uploads/1/3/0/8/130814328/levixob_vuzal.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/1/0434/0826/1276/files/jaxafumiforugejaloxakowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2210/4222/files/37361136198.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/4698/1023/files/beautiful_things_gungor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/34036990767.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0452/5775/2733/files/jemiremutuvokuludi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6550/6966/files/81343418441.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0238/7867/files/pabonegukupipiwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1080/8213/files/twerski_addictive_thinking.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1264/3223/files/data_analytics_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2048/3751/files/8161801142.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7217/5781/files/nisasagezodewodetomapejew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/detroit_lions_injury_report_for_week_6.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 2

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_off00004fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FBB 5456 bytes
SHA-256: 01cb757de08d44ee1ad35477c739cc522b31fe7dc2c7e145a357d6f919e194b3
font_01_sfnt_off00006270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6270 9892 bytes
SHA-256: 2a528692b7ddff7c99648c68f391f0f0e210dd11626974b4f76652f5de257fe8

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