Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1bf0f11337cca2…

MALICIOUS

PDF

46.4 KB Created: 2020-08-30 01:45:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2337be657d339aa8b7d1fcf57d91d98 SHA-1: 7a6767fcc9217cc7fd02f4f0d16f8d0748c907aa SHA-256: cd1bf0f11337cca29ec60518fbf11813801d439a43632b1ce8f1f3f8bb3d84b8
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/wix?keyword=shree+suktam+pdf'. This indicates an attempt to direct the user to a malicious site, likely for phishing or malware distribution. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. No scripts were extracted, limiting further analysis of the payload.

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.cc/wix?keyword=shree+suktam+pdf
    • https://cdn.shopify.com/s/files/1/0431/9071/4532/files/masez.pdf
    • https://cdn.shopify.com/s/files/1/0461/4334/0697/files/beckett_baseball_july_2018.pdf
    • https://cdn.shopify.com/s/files/1/0433/5838/8392/files/jobifojagekoloji.pdf
    • https://cdn.shopify.com/s/files/1/0437/5537/2695/files/14400864576.pdf
    • https://cdn.shopify.com/s/files/1/0437/5920/6558/files/ambala_weather_report_today.pdf
    • https://cdn.shopify.com/s/files/1/0432/3858/8584/files/old_testament_bible_stories_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0430/3178/9721/files/vejiga_hiperactiva_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7048/files/pirodukesa.pdf
    • https://static.usrfiles.com/ugd/b8c837_74a5ce99115d458bb9fffb5bc40a766f.pdf
    • https://static.usrfiles.com/ugd/0baf77_c6e5571d5405433e9be008e031ac42f0.pdf
    • https://static.usrfiles.com/ugd/b8c837_62e8dabb33c44878b688fbbec30ba2a1.pdf
    • https://static.usrfiles.com/ugd/cd79e3_2aba490e549c42e7bb7fda25edbb69ad.pdf
    • https://static.usrfiles.com/ugd/26481d_1d37cbd4c2364bc38b1a621158390b7d.pdf
    • https://static.usrfiles.com/ugd/b8c837_4cb3ad1242f04be28a2eabfdc0afa6fb.pdf
    • https://static.usrfiles.com/ugd/cf14a4_d9b6f7746282469e9f36971273a4b781.pdf
    • https://static.usrfiles.com/ugd/b8c837_3960b0e47166470a835d2421d50ee26f.pdf
    • https://static.usrfiles.com/ugd/f1780b_2e446a895ba94776992cd96eeeb2e6fa.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_off00006a41.bin
2b008f949d75208966d34973b057914be4f4bf21447682e0f0fbe63c9e529202
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A41 5416 bytes
font_01_sfnt_off00007c87.bin
e5f28268f2a9f3d471c826bb7f01d33132c718b883d3545588bf7334a560c771
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C87 16244 bytes