Malicious PDF — malware analysis report

Static analysis result for SHA-256 182d0c55ff2f76b7…

MALICIOUS

PDF

40.2 KB Created: 2020-08-10 06:57:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d746b22bdcca496d0d8811c2efdee86c SHA-1: 8661d8573c465bb793ffc30eb09f21e6e0085efe SHA-256: 182d0c55ff2f76b70666fef1f0bc16d56c83fa6949cf99d5ff005ec591a9ee41
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that lead to a redirector infrastructure, specifically `https://ttraff.com/pify?keyword=bible+study+guide+free+pdf`. This URL is flagged as malicious and likely serves as a lure to download further malicious content or redirect to phishing sites. The document body itself contains obfuscated text and the malicious URL, suggesting an attempt to disguise the malicious intent. The presence of numerous other PDF links further indicates a link farm or SEO poisoning tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=bible+study+guide+free+pdf
    • http://files.harvestlifemissions.org/uploads/1/3/0/7/130739227/32ba12.pdf
    • http://rejozoru.margaretwebblifecoach.com/uploads/1/3/1/4/131407995/xanekufe.pdf
    • http://files.beatricedouglas.com/uploads/1/3/0/8/130813965/xidunojodonumilenapi.pdf
    • http://binobo.elusiveaudio.co/uploads/1/3/2/3/132302963/1037523.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/2520/3354/files/95937361069.pdf
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/74056206424.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/meditation_piano_sheet_music_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/8812/4829/files/acca_f7_pocket_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/2259/7796/files/quatre_accords_toltques.pdf
    • https://cdn.shopify.com/s/files/1/0431/3543/4901/files/93926545667.pdf
    • https://cdn.shopify.com/s/files/1/0434/3726/0966/files/68770156674.pdf
    • https://cdn.shopify.com/s/files/1/0427/7560/9510/files/ratepe.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wowivitotorinu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7229/8913/files/ronojojibopupolikepese.pdf
    • https://cdn.shopify.com/s/files/1/0428/7083/3319/files/wheel_of_time_roleplaying_game_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/1855/9389/files/50577188877.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f09.bin
05c729a4744f80695c0b5902efa666a39b47607d51b6e71e0321b47110f7406c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 5288 bytes
font_01_sfnt_off0000711f.bin
baf54d012fe33dd4bf96fc2e239ec86b484bdcc86fa4bfd460ee333833d45940		 pdf-font-stream PDF embedded font (sfnt) at offset 0x711F 10308 bytes

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