Malicious PDF — malware analysis report

Static analysis result for SHA-256 903963f6271879b1…

MALICIOUS

PDF

41.9 KB Created: 2020-08-01 12:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79d2136bf9ced677f90e2cb9224c4988 SHA-1: 3db4b20ffa01b816365e37befd01d15bfc882c79 SHA-256: 903963f6271879b13bf670953e1b7143433ac58dcc640bd679f978da011fbe93
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains the text 'Best mmorpg of 2016' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The PDF also contains a large number of embedded links, many hosted on shopify.com, which is flagged as a link farm. No scripts were extracted from this sample.

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=best+mmorpg+of+2016
    • http://files.help-me-learn.com/uploads/1/3/1/6/131637814/sixewanuxeriwu.pdf
    • http://files.hellotherehuman.com/uploads/1/3/1/3/131398347/1192907.pdf
    • http://files.staceyagdern.com/uploads/1/3/1/3/131379231/3134491.pdf
    • http://files.bobsindiansales.com/uploads/1/3/2/6/132695663/kivolul-kagitunusu.pdf
    • https://cdn.shopify.com/s/files/1/0434/5217/0392/files/neratobizulawezivup.pdf
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/52767480439.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8658/files/30857830168.pdf
    • https://cdn.shopify.com/s/files/1/0429/1058/0903/files/matabosodowafo.pdf
    • https://cdn.shopify.com/s/files/1/0437/8286/5058/files/pasizukaguleb.pdf
    • https://cdn.shopify.com/s/files/1/0435/1629/7368/files/funum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6118/2617/files/noble_art_of_seduction.pdf
    • https://cdn.shopify.com/s/files/1/0430/9663/7597/files/69525457595.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4815/files/wogulaxizagakiv.pdf
    • https://cdn.shopify.com/s/files/1/0430/4273/4237/files/64633149342.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/jibutomowakasogudukorami.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_off00005fd3.bin
8bf44fb11314f95947d6811c6df51d17fb20adec371cf6edc24d853b35796fb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD3 5508 bytes
font_01_sfnt_off0000728c.bin
a45ec18910e4ccfe506c73d2a3f02ef0f5ee34b83645b4fc1562715d02a13fa8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x728C 12896 bytes

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