Malicious PDF — malware analysis report

Static analysis result for SHA-256 37ef26435f857308…

MALICIOUS

PDF

53.4 KB Created: 2020-08-01 16:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7028eed889a1182eafdbd81489404f4d SHA-1: 0ca2ce532c10b6e3defa98a9f4eccff40c481020 SHA-256: 37ef26435f8573085c4a24a5dd3abf88f6721ea911e06f6dc59300ee06512098
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with heuristics indicating it's a link farm designed to redirect users. One of the primary URLs, 'https://ttraff.ru/pify?keyword=magic+bullets+gungeon', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the document's purpose is to direct users to malicious sites through these links.

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=magic+bullets+gungeon
    • http://files.animalguardianshorserescue.org/uploads/1/3/1/4/131407067/1214556.pdf
    • http://files.kenmaremindfulnessandyoga.com/uploads/1/3/0/8/130814515/71370ab7c8c0612.pdf
    • http://files.thehopechestil.org/uploads/1/3/1/4/131437743/af635.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/gazamutigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/0147/1388/files/21018212393.pdf
    • https://cdn.shopify.com/s/files/1/0434/7055/3238/files/98807716129.pdf
    • https://cdn.shopify.com/s/files/1/0437/8089/8973/files/gojenugum.pdf
    • https://cdn.shopify.com/s/files/1/0429/6150/2362/files/rolufonuvusil.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/wajubakegajisorasajupako.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/sepulosogom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/26965864763.pdf
    • https://cdn.shopify.com/s/files/1/0431/2632/5402/files/vupiwumodaxima.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/8413104530.pdf
    • https://cdn.shopify.com/s/files/1/0429/5095/1066/files/tigivupekunimigenozijemej.pdf
    • https://cdn.shopify.com/s/files/1/0434/2788/9308/files/sear_craftsman_garage_door_opener_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/16917502478.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/1/0434/705

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000868a.bin
c9bd48f60ab09ddc914ebf31302edb2b2447ce09612291e64cf929b8ae97b52b
pdf-font-stream PDF embedded font (sfnt) at offset 0x868A 4896 bytes
font_01_sfnt_off0000973f.bin
c76e111e871f2afe0ae0d866e2b96ea5a9588ac46b2524583215d56147816871
pdf-font-stream PDF embedded font (sfnt) at offset 0x973F 10204 bytes
font_02_sfnt_off0000ba22.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xBA22 4324 bytes