Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a7b1bb11a31e392…

MALICIOUS

PDF

38.5 KB Created: 2020-08-22 23:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b11eaeda9cfea0f3cbcf3ae4e048b365 SHA-1: e5a99af09213dce303c15c24b61c6d1afc977903 SHA-256: 4a7b1bb11a31e39208b6cd44b08bc13b69e719a42a896fd6076d31b375c67429
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to a URL that appears to be part of a lure. The document body, though heavily obfuscated, contains the same URL and a meme-related title, suggesting a social engineering attempt. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify domains, likely to obscure the malicious redirector.

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=spongebob+showing+patrick+diapers+meme+template In PDF document text
    • http://vupeke.seattlepregnancymassage.com/uploads/1/3/0/7/130776485/377411.pdfIn PDF document text
    • http://dewag.arthow-to.com/uploads/1/3/0/9/130969439/1234513.pdfIn PDF document text
    • http://najabivov.preciousinvestltd.com/uploads/1/3/1/0/131070197/ravuwe.pdfIn PDF document text
    • http://files.crossfit-alhambra.com/uploads/1/3/1/4/131406947/7042084.pdfIn PDF document text
    • http://files.scarboroughlodge.co.uk/uploads/1/3/0/8/130814115/pusikuv.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/1/0435/9343/3246/files/download_kosakata_bahasa_arab_sehari_hari.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3359/8880/files/tubugalafo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5036/0232/files/40852707165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7723/7917/files/can_can_meniu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2675/0357/files/metureloxirabavog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6234/5384/files/rixunitadiletinegetirefi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1006/4537/files/debesujuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5026/1911/files/weronutiwaguburen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8604/4572/files/rozekisatovegawux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2729/9478/files/tasaxevifajubaleropuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/5029/9555/files/average_mixtures_and_alligations.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/popudure.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_off000055af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55AF 5884 bytes
SHA-256: b5d3d8e6021ec615ca7ab1409532f8a4b4db83fa57b1cbb3524bb3ed6d962509
font_01_sfnt_off0000698d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 10228 bytes
SHA-256: ba3e6c7db034019abd04f20d806b4772c409095eefc102d106e0b9dbec31c0d9

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