Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce60e0265b92850…

MALICIOUS

PDF

35.7 KB Created: 2020-08-24 16:59:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f15354d77daf3578b5faba1eebb03570 SHA-1: becd7c12a51428dec54af5fa97d531520ab15092 SHA-256: 7ce60e0265b92850105b8ed78991b0bedf2dc61ad8411c010627134715a70467
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.com/pify?keyword=egyptian+pharaohs+project+guidelines'. This indicates the document's primary purpose is to redirect users to potentially harmful sites. No scripts were extracted from this sample.

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=egyptian+pharaohs+project+guidelines
    • http://files.declared2020.com/uploads/1/3/0/7/130738622/1784879.pdf
    • http://files.cafebuzzzbeans.com/uploads/1/3/1/3/131383921/wufiriluzujuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0434/0360/8214/files/lobetopunafegovowewaxuruj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0643/files/dogilabunalopuru.pdf
    • https://cdn.shopify.com/s/files/1/0430/8051/5738/files/good_charlotte_hold_on.pdf
    • https://cdn.shopify.com/s/files/1/0433/9141/8518/files/60415061902.pdf
    • https://cdn.shopify.com/s/files/1/0432/3937/5012/files/wound_management_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0447/9696/9121/files/classes_of_supply.pdf
    • https://cdn.shopify.com/s/files/1/0431/7557/5709/files/77645200407.pdf
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/58257840034.pdf
    • https://cdn.shopify.com/s/files/1/0429/1405/4300/files/wemazatajefanu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0118/3397/files/9366191550.pdf
    • https://cdn.shopify.com/s/files/1/0430/7710/7865/files/47322385602.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/ubuntu_remote_desktop.pdf
    • https://cdn.shopify.com/s/files/1/0428/9350/8771/files/21766395853.pdf
    • https://cdn.shopify.com/s/files/1/0454/7982/1462/files/15000146888.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_off00004daa.bin
c98eeb770c29b38b1bb1b5cbbae698ff69d5ca2c5cdc580979b84703521b2acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DAA 5468 bytes
font_01_sfnt_off00006043.bin
8631d86abd2120be1bff6325c77668cb3599e3bcce23a4396ca0985d4d81acbb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6043 9816 bytes

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