Malicious PDF — malware analysis report

Static analysis result for SHA-256 63d4a24c4518ab0b…

MALICIOUS

PDF

46.6 KB Created: 2020-08-19 23:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 904067829ea8b53a7b852fcaab9f8b48 SHA-1: 136165b031a64695eaa3d3e1bb3f014f1ae4412d SHA-256: 63d4a24c4518ab0b4565f048484f4f4c0fe256d751b206fe6676ab54a21ec90d
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'corporate presentation template' and the malicious URL, suggesting a phishing or scam lure. The presence of many external PDF links indicates a link farm designed to distribute malicious content or traffic.

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=corporate+presentation+template+psd
    • http://files.nowwhat-services.com/uploads/1/3/2/6/132682585/pewiwi-teravewiki.pdf
    • http://salilul.ouimassachusettslawyer.com/uploads/1/3/0/7/130775643/zawamazag.pdf
    • http://files.belllog.org/uploads/1/3/0/7/130775827/2358242.pdf
    • http://files.crazyabtcupcakessd.com/uploads/1/3/0/7/130740464/380879.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://cdn.shopify.com/s/files/1/0431/2449/0397/files/59472584695.pdf
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/aleister_crowley.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/reset_master_branch_to_upstream.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4016/files/vozakipudisokan.pdf
    • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/analysis_of_algorithms_mcconnell.pdf
    • https://cdn.shopify.com/s/files/1/0433/2896/2715/files/objectives_of_annual_general_meeting.pdf
    • https://cdn.shopify.com/s/files/1/0437/3974/2369/files/susezukapujabok.pdf
    • https://cdn.shopify.com/s/files/1/0429/2981/5705/files/verithanam_keyboard_notes.pdf
    • https://cdn.shopify.com/s/files/1/0432/0677/0849/files/joputudilituxarodijovotu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2180/1371/files/john_deere_3020_wiring_diagram.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_off00006796.bin
01fcb51a27aa78c629e0bc88a8b9015547cd6d27d0dec5977e804f553bb2d703		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6796 4916 bytes
font_01_sfnt_off00007824.bin
13ed38c9af97da71fd30c2d36e19220794e1d189ea81bf13e51a04c3ee0a083b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7824 12028 bytes
font_02_sfnt_off00009f83.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F83 4324 bytes

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