Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a2152224735f33…

MALICIOUS

PDF

41.5 KB Created: 2020-08-14 06:41:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2f0ba9882c73715402a0d94871e1103 SHA-1: b9b2e876139f4fc734485ef6a84b8680fa9fd30e SHA-256: 24a2152224735f33332936cb2390a2446244307b974a07d9a271d7f8359cfb9b
154 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.cc, which is disguised as an income tax calculation statement. The document also features a large number of embedded links, many pointing to Shopify domains, suggesting a link farm for SEO poisoning or traffic redirection. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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=income+tax+calculation+statement+form+tamilnadu
    • http://files.nysfcja.org/uploads/1/3/0/9/130969489/mobut_gibonezofidexe_giwukozux_welitedisatis.pdf
    • http://zajuvof.randymarinez.com/uploads/1/3/2/7/132712615/xufajaweturumof.pdf
    • http://files.wisconsinbaroque.org/uploads/1/3/2/7/132740949/povozaxagoleje.pdf
    • http://sixosin.foccm.com/uploads/1/3/1/4/131410007/xerokavezibum.pdf
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/45725036724.pdf
    • https://cdn.shopify.com/s/files/1/0448/5667/2418/files/steven_universe_minecraft_map.pdf
    • https://cdn.shopify.com/s/files/1/0436/6126/3001/files/attendance_sheet_sample.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/measurements_and_their_uncertainties.pdf
    • https://cdn.shopify.com/s/files/1/0436/8728/0790/files/sapizab.pdf
    • https://cdn.shopify.com/s/files/1/0427/5650/5756/files/dibaranaro.pdf
    • https://cdn.shopify.com/s/files/1/0437/8879/6053/files/jutirotowevid.pdf
    • https://cdn.shopify.com/s/files/1/0428/6912/9372/files/tujipusovokexumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3270/files/76497847016.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7700/files/1860409113.pdf
    • https://cdn.shopify.com/s/files/1/0438/6524/3803/files/visotebowekuzajufidibudot.pdf
    • https://cdn.shopify.com/s/files/1/0431/1144/8729/files/miwasatotonevoserexizot.pdf
    • https://cdn.shopify.com/s/files/1/0436/6693/1862/files/kanumelizuvipopus.pdf
    • https://cdn.shopify.com/s/files/1/0431/8766/7103/files/vixelotalanexiguwe.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_off0000608d.bin
5e4a86f008b6e858e7c1b9dc5b8f75a945ae26f50999b25fad00a8f5e316498b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x608D 5172 bytes
font_01_sfnt_off000071f9.bin
3f5a48e062736cd7ad264060a1359c2f32ef834110297b1f57dfcf2e3adcee12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F9 11772 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.