Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0c01911b369932…

MALICIOUS

PDF

46.1 KB Created: 2020-08-19 13:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 2207549ce8b289b8c348ae5f4ac8643e SHA-1: 8142d0edd11824ff865774a16d7198a0145f2458 SHA-256: ac0c01911b369932a5fb036ad5e46f185349a9b20c3f7a1683e42d30af21904a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, masquerading as a datasheet, with the primary link directing to a known malicious redirector. The ML classifier strongly indicated maliciousness. The document body is heavily obfuscated but contains the target URL and references to a datasheet, supporting the lure. No scripts were extracted from this sample.

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=dht11+temperature+sensor+datasheet In PDF document text
    • http://files.eliteeyebrowssa.com/uploads/1/3/2/6/132681559/8048699.pdfIn PDF document text
    • http://files.theimaginariumnh.com/uploads/1/3/1/3/131384173/82b7f9755762e93.pdfIn PDF document text
    • http://tapid.gbramham.com/uploads/1/3/1/4/131406717/risujujivaziregese.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/1/0431/4251/2802/files/quality_assurance_job_description.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6558/0437/files/revenge_lyrics_captainsparklez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/45176775456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jidaxuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5464/2853/files/wowapegire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2683/3823/files/functional_fitness_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4351/8629/files/66634737954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2625/9876/files/58509794757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2118/8763/files/dujeginusenojazozapi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4055/2598/files/block_breaker_deluxe_2_java_game.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 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000670f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x670F 4068 bytes
SHA-256: 0e98be67eba76635c4b8fe859c6685a7f8be9ebe5c5fe1cf367e745f4f5b5c2f
font_01_sfnt_off00007587.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7587 5220 bytes
SHA-256: 4685ee3a38ec90c6f0c3ada2f72870a8647c58d644d393436b0cf61c3ddf8bf1
font_02_sfnt_off00008729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8729 10644 bytes
SHA-256: d142714dd7ae770669092c1475f349177498382a72c3869d3c48e84ecd36a8bf

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