Malicious PDF — malware analysis report

Static analysis result for SHA-256 46238eeb17a27ef4…

MALICIOUS

PDF

37.4 KB Created: 2020-08-07 20:01:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0ea5478df19d0bed8854b3175a64bee SHA-1: 775cf73f6bc062c9404a99ca897ab4299eb1c907 SHA-256: 46238eeb17a27ef4098d77d0e25c2073f81b42b63097b8687435314411a3292b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, identified as a link farm. One critical heuristic indicates a malicious redirector URL, https://ttraff.cc/pify?keyword=anonymous+and+synonyms+pdf, which is likely the primary malicious component. The document body, though heavily obfuscated, also contains this URL and other PDF links, suggesting a coordinated effort to direct users to potentially harmful content or to manipulate search engine results.

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=anonymous+and+synonyms+pdf
    • http://lozuzebel.fwgrace.org/uploads/1/3/1/6/131606094/kibujutu_zusefameror_jikomurudef_lonixasiril.pdf
    • http://files.sonnyxyshop.com/uploads/1/3/0/8/130874253/lufuloxixubuz-zegudazabebun-potunopilolil-majonigobovevir.pdf
    • http://files.newrichmond.org/uploads/1/3/2/6/132696506/nizegifixew.pdf
    • http://files.housenbuildings.com/uploads/1/3/1/4/131406811/162f058c9bad612.pdf
    • https://cdn.shopify.com/s/files/1/0431/7495/3120/files/p90x_routine.pdf
    • https://cdn.shopify.com/s/files/1/0431/1020/3545/files/modelo_canvas_explicacion.pdf
    • https://cdn.shopify.com/s/files/1/0454/2916/2152/files/adobe_reader_for_windows_10_phone.pdf
    • https://cdn.shopify.com/s/files/1/0429/6533/6217/files/vutilusuzinikifi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6881/7569/files/29784667680.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6341/files/bidutumifenemavope.pdf
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/super_mario_64_wads.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/fosididovatek.pdf
    • https://cdn.shopify.com/s/files/1/0428/4229/2390/files/rivabosurowemogoxazaletex.pdf
    • https://cdn.shopify.com/s/files/1/0434/9450/6661/files/road_maps_europe_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/5045/8520/files/rusitor.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_off000052e6.bin
188d4d9b90cb6794787e1cd87a182efd0351d1c0661ca505fa7124c3e1ea3c91
pdf-font-stream PDF embedded font (sfnt) at offset 0x52E6 5148 bytes
font_01_sfnt_off00006469.bin
382e2d087c15bbd250fb43d3a4b31b4fb8d1265e5c97a677e59b8f70a7124044
pdf-font-stream PDF embedded font (sfnt) at offset 0x6469 10756 bytes