Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd6e8016e765eb81…

MALICIOUS

PDF

45.3 KB Created: 2020-08-21 02:03:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f02b75633cb43355f627268870fbef85 SHA-1: cbb42db6f2e04691ab3d42d7bbf4e503026c01ec SHA-256: dd6e8016e765eb81f4bb03a332fc957383c998c55b374ae9dc706b5ab2885725
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 PDF files hosted on various domains. One of these links leads to a known malicious redirector, indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, and the document body was heavily obfuscated, making it difficult to determine the exact lure.

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.cc/pify?keyword=do+the+right+thing+parents+guide In PDF document text
    • http://files.astronomynz.org/uploads/1/3/2/6/132695629/kewemulawika_mizofuvavu_mozar_repokefoga.pdfIn PDF document text
    • http://setuja.amfcontractinginc.com/uploads/1/3/2/7/132740720/52eab244.pdfIn PDF document text
    • http://files.maltipoos.org/uploads/1/3/1/4/131453005/fupoxafesef_nofel.pdfIn PDF document text
    • http://files.makersguildinwales.org.uk/uploads/1/3/0/8/130874400/famit.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2587/4600/files/tidudojowunamimunugupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8402/1921/files/face_shop_green_tea_sheet_mask_review.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3981/7890/files/30092344115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/4169/7441/files/product_manager_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/todesasatiwupofe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3957/1616/files/etiology_of_type_1_diabetes_mellitus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2166/files/ca_dmv_form_for_disability_placard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4014/files/25691862592.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6193/6290/files/dadufiwufa.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 5072 bytes
SHA-256: 55b9471ece6a8837249fed2ba0566bb51ef9371d070fef1d464f12cdb7a2ed07
font_01_sfnt_off00007760.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7760 10244 bytes
SHA-256: 718ea7706b8e59eaaa6cbac2046db33703be3456a4fbfcd5e2ef84d2f5f2f3f9
font_02_sfnt_off00009a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A7C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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