Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd581a8bf1f018c3…

MALICIOUS

PDF

40.0 KB Created: 2020-08-09 01:02:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6d6ed23e26f5bf4f7f6a9f43484f93d8 SHA-1: ffa0bd31da40c138a8d5b51e427518285d523a6e SHA-256: bd581a8bf1f018c3ad2e0aecf28e4bcbea82bfb0169f59fcc562ac8d958f99a5
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic firing indicates a malicious redirector link, suggesting these links are intended to lead users to harmful sites. The document body text, while partially corrupted, includes the string 'Gazetted holidays 2020 in himachal pradesh pdf' and a URL that matches the malicious redirector, reinforcing 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.ru/pify?keyword=gazetted+holidays+2020+in+himachal+pradesh+pdf In PDF document text
    • http://files.soundsofgrace.co.uk/uploads/1/3/1/4/131454090/1089848.pdfIn PDF document text
    • http://files.gradeeight.nestmusic.org/uploads/1/3/1/6/131606059/8253348.pdfIn PDF document text
    • http://files.h2020-ascimat.com/uploads/1/3/0/8/130874192/9014391.pdfIn PDF document text
    • http://files.staceyweckstein.biz/uploads/1/3/2/8/132815872/zinegi_gigidozipa.pdfIn PDF document text
    • http://files.lgbadgeryouthfootball.com/uploads/1/3/2/7/132740997/3262011.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/1/0431/6761/3087/files/sofitel_brand_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8960/files/96731749026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6354/1917/files/types_of_annuities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/biography_of_famous_personalities.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5622/5694/files/tribal_totem_osrs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0630/4162/files/java_programming_questions_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9471/3244/files/kasanobisituwolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0849/9618/files/gelarif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/fekutajaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8295/7478/files/packet_tracer_7._3._2._4.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_off00005304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5304 5852 bytes
SHA-256: 2e86bc47083cbf9afccfb0ae494466349f5d1b9b8cb31e95cd099da5c428f705
font_01_sfnt_off000066e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 13940 bytes
SHA-256: f49414002e1e5199c5e42f365fee88ec8fcb5b32cb47c642188c912201359bad

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