Malicious PDF — malware analysis report

Static analysis result for SHA-256 32685452685795e8…

MALICIOUS

PDF

42.7 KB Created: 2020-08-30 23:50:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d4e452540f4b8a249e1fad7525043c86 SHA-1: eac7bc4e2da823a346abf794d003707ddeb187b6 SHA-256: 32685452685795e84633be75299cd39454b28a9d33b04a5d7915a927352a03e8
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.club', which is used to deliver a payload disguised as a software update. The document body and embedded URLs reinforce this lure, with the primary malicious URL being 'https://ttraff.club/wix?keyword=root+update+supersu+v2+46+zip'. The ML classifier also strongly flagged this PDF as malicious. The presence of numerous benign Shopify links suggests an attempt to blend in with legitimate 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.club/wix?keyword=root+update+supersu+v2+46+zip
    • https://cdn.shopify.com/s/files/1/0441/2493/0200/files/200_profitable_business_ideas_in_kenya_2020.pdf
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/fuzebuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1906/files/edison_nj_police_accident_report.pdf
    • https://cdn.shopify.com/s/files/1/0432/1063/7476/files/wow_warlock_spec_guide.pdf
    • https://cdn.shopify.com/s/files/1/0439/2127/7096/files/perrault_bluebeard.pdf
    • https://cdn.shopify.com/s/files/1/0438/1789/4050/files/46800839635.pdf
    • https://cdn.shopify.com/s/files/1/0432/8154/7424/files/97195910770.pdf
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/xakabesi.pdf
    • https://cdn.shopify.com/s/files/1/0446/9535/5546/files/95345913290.pdf
    • https://cdn.shopify.com/s/files/1/0430/8143/3242/files/sebemofupesu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8091/6893/files/fingerprint_based_attendance_system_using_arduino.pdf
    • https://cdn.shopify.com/s/files/1/0460/8691/4212/files/rofakabevo.pdf
    • https://cdn.shopify.com/s/files/1/0431/4516/7008/files/lutedanovitabuxorosilam.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_off00005f1c.bin
6a403b1de73cf26b1185ef700b63d5abbe4923f4559e1a4c721bc155fd4cc92d
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F1C 5412 bytes
font_01_sfnt_off000071b1.bin
03f15457d262e7e73704a4052d127a7b651f773eeee431d8f6f92e1011a0b02e
pdf-font-stream PDF embedded font (sfnt) at offset 0x71B1 14128 bytes