Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf953b8060fd666a…

MALICIOUS

PDF

46.3 KB Created: 2020-08-15 00:32:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d96b4a06c18aef11651b1a9183f4a11 SHA-1: da3957094521e9af8decab07eae6c00a2d7ebe86 SHA-256: cf953b8060fd666ad8f0e089dea836950bb774dbc82a6281e96a83ccff09eda3
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of embedded links, suggesting a link farm or SEO poisoning attack. The primary malicious URL identified is ttraff.ru, which is known to host redirectors. While no scripts were extracted, the sheer volume of links and the malicious redirector indicate a high likelihood of malicious intent, possibly to lure users to phishing or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=bollyshare+new+movies+2018+bollywood
    • http://boriru.holytrinitydaphne.org/uploads/1/3/1/0/131070487/3543516.pdf
    • http://detumikij.nmillerillustration.com/uploads/1/3/0/8/130873876/torotal-jamopek.pdf
    • http://dilititom.pestcontrolfortworth.net/uploads/1/3/2/7/132740324/870a073.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5959/files/clip_studio_paint_pro_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3557/4943/files/39176950694.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/20075845088.pdf
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/pdf_agama_islam_kelas_12.pdf
    • https://cdn.shopify.com/s/files/1/0434/7301/0850/files/bootstrap_offset_right.pdf
    • https://cdn.shopify.com/s/files/1/0428/0696/8483/files/fajizopukaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/2727/4645/files/65402735370.pdf
    • https://cdn.shopify.com/s/files/1/0434/2287/5797/files/fester_s_quest_nes.pdf
    • https://cdn.shopify.com/s/files/1/0430/8385/8073/files/42854975990.pdf
    • https://cdn.shopify.com/s/files/1/0436/9999/4789/files/movie_box_for_macbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/2624/3996/files/11771333350.pdf
    • https://cdn.shopify.com/s/files/1/0434/7337/1300/files/suwuxerujofanixejagir.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/
    • https://cdn.shopify.com/s/file

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006252.bin
68dda69cf6f8bb173a0bb733263f4aaa7c37987f50d551a225ec470f793630e2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6252 5236 bytes
font_01_sfnt_off000073ef.bin
2e7f2999d5fad1bfbccf560e96732301323656e334fec127284d435ff6c0132c
pdf-font-stream PDF embedded font (sfnt) at offset 0x73EF 6028 bytes
font_02_sfnt_off0000885b.bin
9935e9184820efbf6b688e52c3cbf519871bce5f21615b6bb92d56dbdc01e980
pdf-font-stream PDF embedded font (sfnt) at offset 0x885B 10392 bytes