Malicious PDF — malware analysis report

Static analysis result for SHA-256 919c25de7e1c40d9…

MALICIOUS

PDF

43.0 KB Created: 2020-08-14 15:17:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9870b17b13e6f32201a5d6a276608df SHA-1: 6fddc7c36a53ddb4da3684f77b7d6eac150dc922 SHA-256: 919c25de7e1c40d95746fb208838c2f0c78a7540b6c0eb87820c2ad86137ef58
168 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely part of a credential harvesting or MFA abuse scheme. The presence of a 'download button' lure and the MFA lure heuristic further support this. The document body contains obfuscated text and the malicious URL, indicating an attempt to trick the user into visiting a harmful site.

Heuristics 5

  • 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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cisco+anyconnect++os+x
    • http://files.akita-inu.com.pl/uploads/1/3/2/6/132681316/vozomix.pdf
    • http://lopok.godshealingprocess.com/uploads/1/3/2/3/132303382/60329dd5.pdf
    • http://lafezemu.louisnyikon.com/uploads/1/3/0/7/130739624/peberotinone-jegofitedivav-bofotudupo-geruputevuseju.pdf
    • http://files.p352xparentclubhouse.com/uploads/1/3/1/6/131636689/3631607.pdf
    • https://cdn.shopify.com/s/files/1/0429/0936/8476/files/avery_5161_template.pdf
    • https://cdn.shopify.com/s/files/1/0438/2018/7805/files/55282537290.pdf
    • https://cdn.shopify.com/s/files/1/0434/4433/8854/files/gabutezowefogibolilulosu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6595/6759/files/d_d_fallen_aasimar.pdf
    • https://cdn.shopify.com/s/files/1/0438/5426/6533/files/51235632780.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/9835633531.pdf
    • https://cdn.shopify.com/s/files/1/0428/9904/6553/files/28403767568.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pekuxiwitijumowiviw.pdf
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/tonodugopinunudezurow.pdf
    • https://cdn.shopify.com/s/files/1/0435/4008/6935/files/article_about_educational_psychology.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/
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/fil

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006add.bin
2b754cc1993f096e61a5c4a7770a68827deadb1ee541792664e81b65f1713b39
pdf-font-stream PDF embedded font (sfnt) at offset 0x6ADD 4740 bytes
font_01_sfnt_off00007b19.bin
3447f117043937189f00b4c7e0d8738eb9e90d3a12c8a41efe33e918f7aa2335
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B19 10672 bytes