Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bc05b56556b6581…

MALICIOUS

PDF

36.9 KB Created: 2020-09-09 14:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7f0e7403c63e89903de51ba8485b362 SHA-1: 3c5d1c5986f6ebc861761e22bca0ebff5578c78d SHA-256: 0bc05b56556b6581d8eae87f074449d6ba6b061985f3a601af7e6400052bda45
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged as malicious by an ML classifier and contains a large number of embedded URLs, many of which point to a link farm. The primary malicious URL, 'https://ttraff.club/pify?keyword=akhiyan+dy+kol+teri+photo+video', is identified as a redirector to known malicious infrastructure. The document's content appears to be a lure, likely intended to direct users to malicious sites for phishing or malware delivery.

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/pify?keyword=akhiyan+dy+kol+teri+photo+video
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/8b2c09_6012ac7b735d4c4d996b60e9072ad7c4.pdf
    • https://static.usrfiles.com/ugd/ab059d_342f3fad9b5447439c9f39ed6e5e225f.pdf
    • https://static.usrfiles.com/ugd/ce77c6_8160a2b09cee4be89b26b5a0b6851cd5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f7374e4ddc74456af9432fd1a30e279.pdf
    • https://static.usrfiles.com/ugd/69b86f_6264aee4b7684323ae211a2335fdb42f.pdf
    • https://cdn.shopify.com/s/files/1/0440/6401/4486/files/52407537851.pdf
    • https://cdn.shopify.com/s/files/1/0430/2589/1479/files/xodutikujilafaje.pdf
    • https://cdn.shopify.com/s/files/1/0440/7282/9078/files/23430443877.pdf
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/davegufawazeragopivela.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/3354563466.pdf
    • https://cdn.shopify.com/s/files/1/0436/0726/1341/files/72139457812.pdf
    • https://static.usrfiles.com/ugd/2b25e8_46252190682f402eb729c2b10acb1379.pdf
    • https://static.usrfiles.com/ugd/6f7357_114b415c54694e59bd556ff7e3c2b2fb.pdf
    • https://static.usrfiles.com/ugd/6c8f37_91e868e8de2547e785b25bf348e9c96b.pdf
    • https://static.usrfiles.com/ugd/405339_02d3e3b70aa543fe84a2660a821e4c8d.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004be5.bin
755bbb561e19dd20df8e8af6f6f2278bbe92da3a675441ee715c84909ed15c2e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BE5 5084 bytes
font_01_sfnt_off00005d3a.bin
beb4ff8dc9508475b42a818e7c05c06605efe95434427abc25b7d2c3fa2b1ac5
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D3A 13168 bytes