Malicious PDF — malware analysis report

Static analysis result for SHA-256 e66bc3ad145ed48d…

MALICIOUS

PDF

49.4 KB Created: 2020-08-08 04:09:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: da711556dec3087580df2cc97934e69f SHA-1: b39adca0be84de895115cd157977283c0c3849de SHA-256: e66bc3ad145ed48d8e82a466ff8c69c1834e4cccbeac90ded44bce9f001de7f1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by multiple critical heuristics for containing a malicious redirector link and a large link farm. The embedded URL 'https://ttraff.ru/pify?keyword=bruselas+mapa+turistico+pdf' likely serves as a gateway to further malicious content. The presence of numerous links, many hosted on Shopify, suggests an attempt to leverage SEO or distribute payloads through seemingly benign platforms. No scripts were extracted, but the structure strongly indicates a malicious redirection scheme.

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.ru/pify?keyword=bruselas+mapa+turistico+pdf
    • http://files.paduastore.com/uploads/1/3/1/3/131398194/bb124736.pdf
    • http://files.mariannebargiotti.com/uploads/1/3/1/4/131454012/dufovapuf.pdf
    • http://files.independencegala.com/uploads/1/3/0/7/130738614/1518749.pdf
    • http://files.brianpatrickgodfrey.com/uploads/1/3/2/6/132681482/gaxumegoku.pdf
    • http://files.heidireneeaijala.com/uploads/1/3/1/3/131380480/964d943f1db.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/90908551138.pdf
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/apostila_aromaterapia.pdf
    • https://cdn.shopify.com/s/files/1/0434/4617/3852/files/dogetexakute.pdf
    • https://cdn.shopify.com/s/files/1/0431/2340/9057/files/pukomil.pdf
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/44844242680.pdf
    • https://cdn.shopify.com/s/files/1/0432/6175/5547/files/gisenozujevatin.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mojijemorewowasimagaxo.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/neck_muscle_spasm_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/2050/7544/files/second_type_conditional_clause_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/2883/9586/files/writing_expressions_and_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/zobukaluleriri.pdf
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/84643148062.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92399027362.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000073e4.bin
2557f640c3a6972b016df5d8330afc0dd81d94688b83fb2371bc7be7811f973e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73E4 5124 bytes
font_01_sfnt_off0000854f.bin
4c89e856cbc192ab6dcd2e21e365c942a3d52888ad5279574b45b5f9e8effeda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854F 10868 bytes
font_02_sfnt_off0000a8dc.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA8DC 4324 bytes

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