Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2600477b5a559e1…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 06:01:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 15e868bf3e2e786f91c6460258aa0aeb SHA-1: 247d1c46cfdc1a073ce63c366c8962d0004b50e5 SHA-256: c2600477b5a559e1bf5b52fe6af509193351a0ed80a8f39e220f32785e33bd1a
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL related to 'assassin%2527s creed unity dead kings'. The ML classifier strongly indicates maliciousness. The document body also contains the malicious URL and several benign-looking URLs hosted on Shopify, likely part of a link farm to improve SEO for 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.cc/pify?keyword=assassin%2527+s+creed+unity+dead+kings
    • http://files.pimpernelwharf.co.uk/uploads/1/3/0/8/130874317/gajezasobotitul.pdf
    • http://files.gethsemanelutheranchurch.com/uploads/1/3/1/4/131438539/jorafofepiw.pdf
    • http://files.washingtonmobands.com/uploads/1/3/2/6/132695329/bc30e5.pdf
    • http://rupigijet.cafamilyvisitation.com/uploads/1/3/2/6/132682646/4522772.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinufew.pdf
    • https://cdn.shopify.com/s/files/1/0445/7899/6383/files/august_2020_current_affairs_oliveboard.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/mujipusitato.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3636/files/70218405892.pdf
    • https://cdn.shopify.com/s/files/1/0432/1948/4839/files/bigasoft_video_er_pro_license_code_mac.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2952/files/37814392789.pdf
    • https://cdn.shopify.com/s/files/1/0433/0363/3051/files/insert_excel_sheet_in_powerpoint_2010.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fofigez.pdf
    • https://cdn.shopify.com/s/files/1/0433/7362/5500/files/hard_short_riddles_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/3695/8104/files/los_anunnaki_creadores_de_la_humanidad_gratis.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006878.bin
39e5dd46eaf1efab1943e61e54bd46efefaf0b9ca7fb03027073e6308a93caad
pdf-font-stream PDF embedded font (sfnt) at offset 0x6878 5264 bytes
font_01_sfnt_off00007a72.bin
c57b0931f7d978b753741bee2f44866c37decaed32b96e62a3114da3e9763a12
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A72 10252 bytes