Malicious PDF — malware analysis report

Static analysis result for SHA-256 17d2d7e468931ae1…

MALICIOUS

PDF

46.0 KB Created: 2020-08-05 03:12:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b1b666b8ae704763cbe949b96e82f3a SHA-1: efc0ef2b949f66726b88d6aa01e02d15397e9552 SHA-256: 17d2d7e468931ae1a1aab682c6cae19c19537927ed39c723cb9449e09c722c76
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text referencing "Bohemian Rhapsody piano pdf" and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a large number of external PDF links further indicates a link farm or redirection strategy.

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=bohemian.+rhapsody+piano+pdf
    • http://files.lyndonstatesga.com/uploads/1/3/0/7/130776850/fifigiwozikexa_wudekikasudajaz.pdf
    • http://files.nicuawareness.org/uploads/1/3/0/7/130775310/e6d4976752be2e0.pdf
    • http://files.destinationdelicious.com/uploads/1/3/0/7/130775106/kizakuvorejaxo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/24276036539.pdf
    • https://cdn.shopify.com/s/files/1/0431/7193/8461/files/danuxodavuxidefo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/aparajita_stotram_in_oriya.pdf
    • https://cdn.shopify.com/s/files/1/0431/4418/3970/files/48104240526.pdf
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/zilaxogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/faramerujinusopuko.pdf
    • https://cdn.shopify.com/s/files/1/0428/5900/4070/files/70831898582.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/62096624960.pdf
    • https://cdn.shopify.com/s/files/1/0428/7679/7081/files/19214250581.pdf
    • https://cdn.shopify.com/s/files/1/0437/8542/0949/files/88425957690.pdf
    • https://cdn.shopify.com/s/files/1/0440/4215/8245/files/megipesikis.pdf
    • https://cdn.shopify.com/s/files/1/0432/3088/8094/files/84043220764.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068df.bin
16d4f76d021d57364efd6401ce55853ca71d9f2abf0fedef8e5d415e8847e202		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68DF 5140 bytes
font_01_sfnt_off00007a2e.bin
597ec6ac1e346e1454901daa7c63cabc6f55372c0df341a8f13c69852b4b821b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2E 10180 bytes
font_02_sfnt_off00009d09.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D09 4324 bytes

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