Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e1a15967c9bda4…

MALICIOUS

PDF

43.3 KB Created: 2020-09-03 12:57:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a93a20431bcdef7b3b423e839739971 SHA-1: aa4de34bf730d563e12141a88f62b9c0f4f6e50c SHA-256: 28e1a15967c9bda489308fda20a061d5a808d3b76f30169cb0dad171ecdc8a00
120 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, pointing to 'https://ttraff.club/pify?keyword=secrets+game+of+choices+mod+apk'. This URL is presented within the document body, suggesting a social engineering lure related to a game mod. The PDF also exhibits characteristics of a link farm, with numerous embedded links to other PDFs, likely for SEO manipulation or to distribute further malicious content. No scripts were extracted, but the primary malicious activity appears to be the redirection to the malicious URL.

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/pify?keyword=secrets+game+of+choices+mod+apk
    • https://cdn.shopify.com/s/files/1/0428/8928/1692/files/70373330528.pdf
    • https://cdn.shopify.com/s/files/1/0464/6574/5054/files/50039530575.pdf
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/dupila.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d6aea8c2aee497888f58e33595ee7da.pdf
    • https://static.usrfiles.com/ugd/c8df25_15388fbdb5564819966535c2a8eecd18.pdf
    • https://static.usrfiles.com/ugd/43d598_3a7c13447db44873afa16fe7999da439.pdf
    • https://cdn.shopify.com/s/files/1/0432/1162/0509/files/10007311255.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/78107001569.pdf
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/34587112167.pdf
    • https://cdn.shopify.com/s/files/1/0435/0767/9387/files/30644525872.pdf
    • https://cdn.shopify.com/s/files/1/0429/3446/8774/files/18617967225.pdf
    • https://cdn.shopify.com/s/files/1/0429/8807/7209/files/26416118392.pdf
    • https://cdn.shopify.com/s/files/1/0429/5753/7439/files/dekuzofidezekoba.pdf
    • https://cdn.shopify.com/s/files/1/0428/5782/4415/files/campingaz_party_grill_400_cv_manual.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_off00005ce2.bin
799f3fad19e2ca45e04902654884bc24dfcf428d6156cfc3ca1e2089a7533e6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CE2 5388 bytes
font_01_sfnt_off00006f2d.bin
5beadf2b62956b9be3496f9f29a238657711dff10d9ec65b2c37523ddc5967ad		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F2D 10272 bytes
font_02_sfnt_off00009246.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9246 4324 bytes

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