Malicious PDF — malware analysis report

Static analysis result for SHA-256 accb2ad938a6123f…

MALICIOUS

PDF

42.8 KB Created: 2020-08-11 02:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ef05bd0f191727541f59bdedc4da67ac SHA-1: 0614c3315600eff134a7a7f53be42bd5d8cad449 SHA-256: accb2ad938a6123f6d0c7fdab2ca9d9c228a49f73e34f2e6dc2f5533885b4d57
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, suggesting a lure to a phishing or malware distribution site. The presence of a link farm further supports the malicious intent of directing users to external resources.

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.com/pify?keyword=approaches+to+discourse+analysis+pdf In PDF document text
    • http://rosipo.newseasonwc.com/uploads/1/3/2/3/132303189/gonafujako.pdfIn PDF document text
    • http://fevekat.trec.space/uploads/1/3/1/3/131379362/basokamal.pdfIn PDF document text
    • http://vomuvi.vls-stud.co.uk/uploads/1/3/2/8/132814930/c5ce8084.pdfIn PDF document text
    • http://durip.fingers4hiretranscription.com/uploads/1/3/1/4/131437130/1899151.pdfIn PDF document text
    • http://binepiri.cuckoostudios.com/uploads/1/3/0/8/130874493/lirumuf.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/1/0428/2938/1791/files/16756356230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7761/5262/files/48301711174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8185/9225/files/63158902065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/26900768172.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1347/9320/files/toxokag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3690/8439/files/85526452187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1120/files/17989340749.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3545/7696/files/centrelink_carers_allowance_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7968/7574/files/ata_chapter_100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8244/0103/files/jirepuxosig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9172/9309/files/everest_base_camp_map.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 4

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_off00006973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6973 5336 bytes
SHA-256: cfaa745c9a155e0226c66e00034d619eeafb95ca06245237246873a6a14bc9ac
font_01_sfnt_off00007b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B93 10120 bytes
SHA-256: da8389c8d7ab1bfd6b1c062ab552c92162a6b8eea5250653721c0ce4a534c77e

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