Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69d21808624e0b0…

MALICIOUS

PDF

37.2 KB Created: 2020-08-10 12:52:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f792c40943d3ae824f8dc0dceb059ba1 SHA-1: c3b4629362c1f33d5ca857bb8c11f0e741de5428 SHA-256: a69d21808624e0b014ea0de1a30bebf32a35dd66f43cdb923b3fa60a072d3864
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 the URL that triggers the malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content widely.

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=degree+of+adjectives+exercises+with+answers+pdf In PDF document text
    • http://files.egpsinc.org/uploads/1/3/0/9/130969655/bamobavu.pdfIn PDF document text
    • http://nikobewa.spartanswolvesfc.com/uploads/1/3/0/8/130873995/zawujolodopu.pdfIn PDF document text
    • http://files.shsbusinessclass.com/uploads/1/3/0/7/130775108/ligodida.pdfIn PDF document text
    • http://files.livyou.org/uploads/1/3/2/8/132814305/3586636.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/1/0429/2182/0319/files/kimapigetigad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/uba_aptitude_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1941/0328/files/camille_paglia_sexual_personae_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5482/4598/files/9897661941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6677/8009/files/risk_management_process_in_insurance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4040/7701/files/55559789909.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1703/6198/files/47024638157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7564/1247/files/feloxajurudegixilejaparim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/lazemalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8768/1954/files/bearing_numbers_explained.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0803/2922/files/51579585792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6391/8246/files/goloxusipodanexevigimafaw.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_off000050c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50C2 5680 bytes
SHA-256: d57474b09920d849b6b483af13b77591d1599a611b0cbb678db3d9d7c6098103
font_01_sfnt_off00006440.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6440 10548 bytes
SHA-256: 0ddba83183b87237002adef8ae31659ed0966205453a8f3bdb9484d80cdf1861

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