Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c41d73b7d02a27…

MALICIOUS

PDF

36.8 KB Created: 2020-08-22 22:54:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 594365b322912a8f2bd1a1815f85bea3 SHA-1: 33107c7fdfd7c8e8df0ac68a65c0001d362466d4 SHA-256: 08c41d73b7d02a27f20182b1468abab01cd779ebee764d955c1bfaa99c3210d7
194 Risk Score

Malware Insights

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

The PDF contains a link to a redirector disguised as 'plant and animal cell lab answers', which is a common lure for phishing or malware distribution. The ML classifier strongly indicated maliciousness, and the presence of numerous external links, many pointing to Shopify, suggests a link farm designed to obscure the true destination. No scripts were extracted, but the embedded URLs are the primary indicators of 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/pify?keyword=plant+and+animal+cell+lab+answers In PDF document text
    • http://senonek.sunnyjfarm.com/uploads/1/3/0/8/130873995/0a8a1421fc46.pdfIn PDF document text
    • http://files.main-global.com/uploads/1/3/0/7/130739826/4c054380d.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/1/0431/0895/8362/files/food_safety_program_template_class_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8929/7568/files/56675453190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/51503061027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1615/7344/files/challenges_of_democracy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3182/2485/files/59601443277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0465/0359/2094/files/36608655984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2402/2690/files/1369651434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7434/5365/files/zaxuretoramirerofadij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0704/9877/files/molezudotifinunebune.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1730/4226/files/96737021075.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/dotexodub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0649/2823/files/pobupejuruw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3942/2626/files/lofavuxoxes.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 5

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_off0000530d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x530D 5316 bytes
SHA-256: 566c93c01a216daf68d04d4d46f81f6f93c6598b594c0abfcf38fcec258c804f
font_01_sfnt_off00006506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6506 9788 bytes
SHA-256: 417647f228ce0e32c5c32078e13ad6c5589df113c86bd46edb78aacb37c1d0ea

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