Malicious PDF — malware analysis report

Static analysis result for SHA-256 c45a0669d3d12901…

MALICIOUS

PDF

43.6 KB Created: 2020-09-06 11:48:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c10031889c1a4459e1b69e14382e1469 SHA-1: 209ae0be06ca2a49555af99a291274565386f3a1 SHA-256: c45a0669d3d129018ba7cc833ee56b9151a9286f3cf0a9f5026fca854d20d5c4
150 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.me/wix?keyword=lamborghini+song+diljit++pagalworld', which is flagged as malicious. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier also strongly indicated maliciousness.

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.me/wix?keyword=lamborghini+song+diljit++pagalworld
    • https://static.usrfil
    • https://cdn.shopify.com/s/files/1/0434/4745/1798/files/41116912994.pdf
    • https://cdn.shopify.com/s/files/1/0432/9121/3980/files/dovinani.pdf
    • https://cdn.shopify.com/s/files/1/0429/0645/2127/files/73240306804.pdf
    • https://cdn.shopify.com/s/files/1/0432/8954/2809/files/54790941859.pdf
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/zutukelafa.pdf
    • https://cdn.shopify.com/s/files/1/0448/4333/5837/files/hemodialysis_catheter_infection.pdf
    • https://cdn.shopify.com/s/files/1/0440/1286/3638/files/truffle_butter_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/3152/7577/files/57110896634.pdf
    • https://cdn.shopify.com/s/files/1/0433/7811/4727/files/reversible_and_irreversible_changes_year_5_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/31035563716.pdf
    • https://cdn.shopify.com/s/files/1/0438/6521/1035/files/40458759860.pdf
    • https://cdn.shopify.com/s/files/1/0432/8020/3944/files/windows_10_activation_crack.pdf
    • https://static.usrfiles.com/ugd/362633_79466451633740b689b83b4364493f54.pdf
    • https://static.usrfiles.com/ugd/3e9e83_26c46bdf23ef4a2eac0611122de1d7b5.pdf
    • https://static.usrfiles.com/ugd/cd79e3_f5ddf5e4a0ee4980a171a125c51dbc0d.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_34ea4e02f3014bbd968e3b3d981d66b8.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000055df.bin
c35445cb3cb32ff8c82cdd7041cfeb6cfb354c5e2734b5baf6ce19f1bd4ad16f
pdf-font-stream PDF embedded font (sfnt) at offset 0x55DF 5292 bytes
font_01_sfnt_off000067b8.bin
34349b21f0ab1ae77c0a5c0e65227b25e6975dafb09d54b32debb9da440344d9
pdf-font-stream PDF embedded font (sfnt) at offset 0x67B8 13712 bytes
font_02_sfnt_off00009359.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x9359 4324 bytes