Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b579dfd1c68c972…

MALICIOUS

PDF

42.3 KB Created: 2020-09-03 03:55:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82581f1f90a05286a2a9b6277c0bf09d SHA-1: 535023fefd00f2d6c983c8a2706d28059d0b7990 SHA-256: 7b579dfd1c68c972c80939a5ed104d092829ae8234df4554ddcc3bcfc61e0e4b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.club/wix?keyword=wifi+arp+spoofing+android'. This link is presented within the document body, suggesting a social engineering attempt to trick the user into clicking it. The PDF also contains a link farm heuristic, indicating a large number of external links, many hosted on cdn.shopify.com. The presence of these links and the malicious redirector strongly suggests a phishing or scam attempt.

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.club/wix?keyword=wifi+arp+spoofing+android
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/19868676337.pdf
    • https://cdn.shopify.com/s/files/1/0435/2655/3755/files/punomakivaforedu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/52377226362.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/space_encyclopedia_free_download.pdf
    • https://static.usrfiles.com/ugd/ecec20_d3756f0b7c7744e69262841b4237a36b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6e84d85fa70c49ba906df7bf6528ebcd.pdf
    • https://static.usrfiles.com/ugd/d3758e_7836e6cf92d14e3e99d922b3a70f0155.pdf
    • https://static.usrfiles.com/ugd/b8c837_47b202d7a54d49bcb8fff20e4828ace3.pdf
    • https://static.usrfiles.com/ugd/c83fdb_873a6132ca4b4acca7f704f91b7764ae.pdf
    • https://static.usrfiles.com/ugd/7c3584_8f9a88119d90474d978261d2c60f5316.pdf
    • https://static.usrfiles.com/ugd/b13fd1_44cfd2df89044ec292517b54af9a4549.pdf
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/drawstring_c_rotatetransform.pdf
    • https://cdn.shopify.com/s/files/1/0427/7737/8972/files/kowesonutubozaluzi.pdf
    • https://cdn.shopify.com/s/files/1/0463/7402/7419/files/vipetusubesofiwad.pdf
    • https://cdn.shopify.com/s/files/1/0437/2093/3528/files/show_users_mysql.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_off0000692f.bin
b77ed30c637272b0a4a7ea0792a6ef6a79e162c274a836837c59f397efce68c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x692F 5188 bytes
font_01_sfnt_off00007af6.bin
014887d9c86c5a1951f79c73c06bc4ae3a5ac7e92e5644abb2542d49fede1151		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AF6 9824 bytes

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