Malicious PDF — malware analysis report

Static analysis result for SHA-256 9acdd059440438c4…

MALICIOUS

PDF

43.1 KB Created: 2020-09-02 11:28:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c14be598534963e815931f7fa4f7edf3 SHA-1: e1b9756b52e95a1f73b608ff4fa105dce31727c9 SHA-256: 9acdd059440438c4f9425b99bcf5addd03e780c76362128bce3a93daef840aea
150 Risk Score

Malware Insights

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

The PDF contains numerous links, with one critical heuristic identifying a link to known malicious redirector infrastructure at 'https://ttraff.club/wix?keyword=lean+body+hacks+21+day+guide+pdf'. Another heuristic indicates a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains text related to 'lean body hacks' and the malicious URL, reinforcing the lure.

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.club/wix?keyword=lean+body+hacks+21+day+guide+pdf
    • https://static.usrfiles.com/ugd/b8c837_df61845d59054d0abe04d449837c5a15.pdf
    • https://static.usrfiles.com/ugd/0779a3_cd4b40c2697f431282b74100e54bbeff.pdf
    • https://static.usrfiles.com/ugd/d1fcfc_88f6abe6560548438ecf18884b1a21ba.pdf
    • https://static.usrfiles.com/ugd/565485_7953bfeba881400dad67e43594510a70.pdf
    • https://static.usrfiles.com/ugd/a640e9_4981ffb989f847c28f39ad1caa184413.pdf
    • https://static.usrfiles.com/ugd/b8c837_bbe3e27c4de042d8b924d2f59be0f480.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_d43b1b2f5e7c4a8fa81951015358a25c.pdf
    • https://static.usrfiles.com/ugd/6c032c_40664175dac84f3c9453121ba2e45bd5.pdf
    • https://static.usrfiles.com/ugd/3e87bf_20673284e27e49c89a3303f81e3e3440.pdf
    • https://static.usrfiles.com/ugd/2f8cea_a455a2a6fda846f0a61fec1632ed67e8.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/92161478626.pdf
    • https://cdn.shopify.com/s/files/1/0433/7346/1669/files/bowarasajisewapot.pdf
    • https://cdn.shopify.com/s/files/1/0437/7631/1453/files/cyclone_song_jaz_dhami.pdf
    • https://cdn.shopify.com/s/files/1/0436/0624/5539/files/pivimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7912/2587/files/53602262525.pdf
    • https://cdn.shopify.com/s/files/1/0427/9641/7191/files/tanatologia_libros.pdf
    • https://cdn.shopify.com/s/files/1/0434/0203/5351/files/jenenujexi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9799/5941/files/sotuwalalisudotim.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_off0000686c.bin
7588b0c92491587faf2a47b00bc754fa0659bb0d57f9738e55e97f378eea9fb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x686C 5720 bytes
font_01_sfnt_off00007bfe.bin
17acc2e5a2fac7eab436f954daf3a3a82dc46e8cdc1b287a435bd60db0d7967d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BFE 10460 bytes