Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fd07d2939bf654a…

MALICIOUS

PDF

37.4 KB Created: 2020-08-02 23:59:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1e1112f87b2897a9712745fd679adf4e SHA-1: c27b3644e1c62cc005382185d537f224a23bce35 SHA-256: 6fd07d2939bf654a3f0086dbca22de7bf4f1392325759856cc401589f63fe20e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing indicating it links to known malicious redirector infrastructure, specifically `https://ttraff.com/pify?keyword=montana+300+try+me`. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and benign-looking Shopify links, suggesting a lure to a malicious site.

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=montana+300+try+me In PDF document text
    • http://files.shopzoekate.com/uploads/1/3/2/6/132682758/gulezerewabe-tutemit-napedazetozafan.pdfIn PDF document text
    • http://files.bridgeportcf.org/uploads/1/3/1/3/131383619/lebevawifubu.pdfIn PDF document text
    • http://files.youngengineer.wales/uploads/1/3/1/8/131857540/jamaf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/60748002813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1175/1579/files/16023799312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5597/0454/files/fexuwaxuken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/76807911141.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2103/2859/files/54177276152.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/dagexevidi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3274/6906/files/80450317935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8433/2710/files/1400_calorie_diet_plan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4620/7650/files/32623469121.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/zemajeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7005/4805/files/97167055731.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/jenetote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/68448138949.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055db.bin
541cf2bc5a7e9d208e26a2952bf98d90d5f8ded5cc07937e834d8c1435981fbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55DB 5036 bytes
font_01_sfnt_off000066fb.bin
d926a4ec9d7fe26f26677b2f9ff795a2b6fa417c2421ecd7ff5e37ed24ea231e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66FB 9936 bytes

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