Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6492d2e4d4721f…

MALICIOUS

PDF

66.1 KB Created: 2020-12-16 23:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 06d8fde9c4a3b505b62efc8d0a7067f1 SHA-1: 94e73aa5fed0b0c9d3da9a4342ae32ac0ce78f60 SHA-256: 0d6492d2e4d4721f5394221e52c872af87be2d59391294a18fb13a23c929be35
196 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, many of which point to an SEO redirector service. The primary malicious URL identified is a redirector that uses a search term related to leadership disadvantages, suggesting a phishing or content-luring tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further payloads or conducting phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?utm_term=autocratic+leadership+disadvantages+pdf PDF link annotation
    • https://zegekeli.weebly.com/uploads/1/3/4/6/134616407/tudazat.pdfIn PDF document text
    • https://gafekiwukuwemul.weebly.com/uploads/1/3/4/3/134313713/ludixoji_govagajarebuka_fanokem_xusez.pdfIn PDF document text
    • https://wesoxiworikezux.weebly.com/uploads/1/3/1/3/131380467/divasupitewuse.pdfIn PDF document text
    • https://dopuxaponaxu.weebly.com/uploads/1/3/2/6/132695391/2323367.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/7447994.pdfIn PDF document text
    • https://fuwelobuzade.weebly.com/uploads/1/3/4/6/134649994/3da36cf4f4964da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/de499f61-dbe5-414e-9bc9-2020c5983f8b/daniel_elder_ballade_to_the_moon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af3809a1-57c7-4a5f-ac34-06795ee704ec/periboj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecd528b9-9f66-404e-ada8-db0a09532855/78911440652.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5733913-c3b0-432f-a576-224c88e3634b/arithmetic_sequence_worksheet_grade_11.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4135d57c-8596-4908-a1a8-d843d4c7cb78/90447952791.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b679c7c-f2dc-4403-9d1e-b26eb7d578dd/vajatepubebegodite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2416b66f-f3f5-4277-b586-ea7dedf6c817/lejog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f831c992-3a7d-44c2-bfd4-ddac706c9bf1/jordan_ami_de_alessandra_sublet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46ea9895-1754-47da-b93b-72e4828cef07/22868645064.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_off0000c5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5B5 5464 bytes
SHA-256: 16675db9659c3389337f365226c0bfbba49de52b2783abd30a2df64b520139ea
font_01_sfnt_off0000d850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD850 10644 bytes
SHA-256: 582de065c58525d4dec130c0c7678a3d2905ca04d778974b836508e99f6f5461

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