Malicious PDF — malware analysis report

Static analysis result for SHA-256 a40443214f17154c…

MALICIOUS

PDF

35.3 KB Created: 2020-08-30 20:22:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f30a28c7641a9129e5fac4f887b9448 SHA-1: 58875deb7a42a1dcfba067579644893f7889c206 SHA-256: a40443214f17154c38183e68f2cf67ab90fa18973a62965c11ae41501a71c1ce
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=2003+polaris+predator+90+manual'. This indicates the document's primary purpose is to redirect users to a malicious site. The presence of a large number of external PDF links, many pointing to Shopify, suggests a link farm or SEO poisoning tactic to increase visibility. No scripts were extracted, and the document body is heavily obfuscated, but the malicious redirector is a clear indicator of malicious intent.

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.cc/wix?keyword=2003+polaris+predator+90+manual
    • https://cdn.shopify.com/s/files/1/0429/3145/4119/files/st_thomas_aquinas_philosophy.pdf
    • https://cdn.shopify.com/s/files/1/0434/1488/0405/files/dog_the_bounty_hunter_theme_song.pdf
    • https://cdn.shopify.com/s/files/1/0427/5834/0774/files/30360928986.pdf
    • https://cdn.shopify.com/s/files/1/0435/4146/3189/files/descriptive_analysis_spss.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7427/files/67448494137.pdf
    • https://cdn.shopify.com/s/files/1/0435/1423/2996/files/pederejanoxirixir.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/17193501767.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdf
    • https://cdn.shopify.com/s/files/1/0461/5392/4771/files/sasori_vs_chiyo_and_sakura.pdf
    • https://cdn.shopify.com/s/files/1/0433/3977/6159/files/bar_bending_machine_manual.pdf
    • https://static.usrfiles.com/ugd/834936_0f4b03c6e43e46798f565602ec8d1fbb.pdf
    • https://static.usrfiles.com/ugd/be19e1_752338f9fa7f46e1ac0496b17d0b899c.pdf
    • https://static.usrfiles.com/ugd/6f9b04_448f8a6e1e0044bda6f77e4e03d9e0f6.pdf
    • https://static.usrfiles.com/ugd/63d3ad_52d7edf4d89c46c6b96543912f34e839.pdf
    • https://static.usrfiles.com/ugd/b8c837_574b4fec45da492e8caa4cedde46f2f9.pdf
    • https://static.usrfiles.com/ugd/6da380_9ed56af458564973853f347e3f8ae254.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_off00004bcc.bin
46d302c1a88a50cc5147d17f5bb9549b1854d2a38d9e3682897f136d996039e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x4BCC 5604 bytes
font_01_sfnt_off00005ea0.bin
199f5f1e5f03259d6f519017da8a19412321cd4d219bcca7b2f8153f409fc604
pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA0 9888 bytes