Malicious PDF — malware analysis report

Static analysis result for SHA-256 a54f20a7951215eb…

MALICIOUS

PDF

54.6 KB Created: 2020-08-04 22:12:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0a1251dd2e58d19a4d05ac7468dcd5b4 SHA-1: affdfb6af50d4d13dd485349d092a343c5383229 SHA-256: a54f20a7951215eb091d601aeaf7259aa0fdcdf99942177c7f93c59d18d262e6
194 Risk Score

Malware Insights

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

The PDF contains embedded links that lead to a redirector service, which is a common technique for delivering malicious payloads or phishing pages. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.cc/pify?keyword=campbell+ap+biology+11th+edition+pdf as pointing to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic indicates a large number of generated links, suggesting an attempt to manipulate search results or distribute content widely. The ML classifier also strongly indicates maliciousness.

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=campbell+ap+biology+11th+edition+pdf In PDF document text
    • http://files.slpseniorparty.com/uploads/1/3/1/4/131406592/9483992.pdfIn PDF document text
    • http://files.bodyplayexpress.com/uploads/1/3/0/9/130969885/339f2c2112f2f.pdfIn PDF document text
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdfIn PDF document text
    • http://files.miltonkeynesmanandvan.com/uploads/1/3/1/3/131383826/timoxak.pdfIn PDF document text
    • http://files.premshudosho.com/uploads/1/3/1/3/131379296/c0fba79e14ae0e9.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/1/0429/6717/1223/files/saduwilufuvu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/binoluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3033/2060/files/barumap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1171/6766/files/tozepewurifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/1975763988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/babasetaxoguvivowe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3064/2837/files/kulagedegivupixifaxapigef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4790/2623/files/pixajirunedatavuloripit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8955/1770/files/kidz_bop_thrift_shop.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_off00009914.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9914 5380 bytes
SHA-256: 79386079405780b3c466ae095d37c165fdbb1ccca08c1663ebfb570249291db7
font_01_sfnt_off0000ab43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB43 9980 bytes
SHA-256: 347c422e3f497f701c71b8db77be3dddeb5a282769dc7bbcd4b0c449ecc6a0ea

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