Malicious PDF — malware analysis report

Static analysis result for SHA-256 be42533a164ac66b…

MALICIOUS

PDF

50.2 KB Created: 2020-07-31 10:43:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 54863dbb8a97932fbf1126f981590544 SHA-1: fadca7d0bafe92bb6ca023fc453ae590877dc626 SHA-256: be42533a164ac66b0902bb9a8355c6b2cceb30c7e8e3cb63bae7171317d4997d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a redirector URL associated with malicious activity. The document body, though heavily obfuscated, suggests a lure related to a 'cloche hat pattern pdf'. The presence of a link farm heuristic further indicates an attempt to distribute malicious content or manipulate search engine results.

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=cloche+hat+pattern+pdf In PDF document text
    • http://files.amaakarate.com/uploads/1/3/1/4/131453022/fojiloluxovopa.pdfIn PDF document text
    • http://files.isuministries.org/uploads/1/3/1/3/131398250/dakirofe.pdfIn PDF document text
    • http://files.breedingforthefuture.com/uploads/1/3/2/6/132681566/sutavumuz.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/1/0432/6467/1909/files/bexezix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xewujixamugovaginebutomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4296/3613/files/moronepoxogobakefusowima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2191/7598/files/remekuzixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/midozago.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5198/3772/files/48318769238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44603331863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3138/6529/files/66241389506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/kunasupidofodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3942/2626/files/53558100698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0064/3236/files/tegifuramubuxiwimo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vufofabiziterefabul.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_off0000883e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883E 4828 bytes
SHA-256: 96ca0a1c1d4d0e113802e9896cfa78ee105b16bf944f0a9e4d65519d1d2b7db8
font_01_sfnt_off0000989b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x989B 10228 bytes
SHA-256: 5de3ea75db360a61f96af707cb42eadd71fb7f40df70b8984eb272208feb8d49

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