Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ffc5aae518097d1…

MALICIOUS

PDF

59.4 KB Created: 2020-08-18 18:53:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c562a300e41308a286c32b47d43ff1c SHA-1: 1d1feb90a8d26c61dde5db73c6f6b16f8320e13b SHA-256: 0ffc5aae518097d1b2c93b3ce040c7ed7603e42bf32a74369f1332ee3ac2d7dd
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ttraff.com'. The document body, though partially obfuscated, contains the text 'Money laundering reporting officer singapore' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm used for SEO poisoning or distributing malicious content.

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=money+laundering+reporting+officer+singapore
    • http://xafokune.wylieeastsoftball.com/uploads/1/3/2/6/132681513/e0c4d4c6e1e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0459/2061/6599/files/sepsis_guideline__sofa.pdf
    • https://cdn.shopify.com/s/files/1/0433/9151/6826/files/xebudapiribomenunudu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0829/4039/files/nitijow.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/73131528093.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94192334972.pdf
    • https://cdn.shopify.com/s/files/1/0433/7369/1045/files/microsoft_office_2003_dowload.pdf
    • https://cdn.shopify.com/s/files/1/0430/4922/2298/files/28094315688.pdf
    • https://cdn.shopify.com/s/files/1/0429/0392/8991/files/nuwave_infrared_oven_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/1297/9879/files/tomamopekopimaxamelulikib.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/brother_hl_l2366dw.pdf
    • https://cdn.shopify.com/s/files/1/0428/1162/1543/files/kujixutagu.pdf
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/american_wrestler_the_wizard_english_subtitles.pdf
    • https://cdn.shopify.com/s/files/1/0431/8422/6453/files/lejepegutezaxumabojokimir.pdf
    • https://cdn.shopify.com/s/files/1/0432/8977/2187/files/56860282814.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_off0000aa56.bin
50ba4f6537e670fcb306c2c13b18dead9b6cf38523ee6c7ad3eec11ef25e2c42		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA56 5432 bytes
font_01_sfnt_off0000bcf2.bin
962192c4d4c34e9da069f94ca8f002ac4ff0de7abbb955019a52983f27b653c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCF2 10304 bytes

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