Malicious PDF — malware analysis report

Static analysis result for SHA-256 29df62878b4fbb3a…

MALICIOUS

PDF

47.1 KB Created: 2020-08-22 09:17:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4eb8e8c1a97d462611094c0114040bae SHA-1: b7c051d2f041380ffcc3349fd70eb7fcfcccc300 SHA-256: 29df62878b4fbb3a0a1c20575584979d9bf0f7da11a310693e523aec981ca156
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the string 'https://ttraff.cc/pify?keyword=standard+costing+techniques+pdf', indicating a lure to this malicious site. The presence of numerous Shopify-hosted PDF links suggests an attempt to disguise the malicious intent within a large volume of seemingly benign content.

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/pify?keyword=standard+costing+techniques+pdf
    • http://wijomod.rmtta.com/uploads/1/3/1/6/131636612/gixusugibifij.pdf
    • http://files.montreuxatfc.com/uploads/1/3/2/3/132302732/pamofolusu.pdf
    • http://files.theknightlymuse.com/uploads/1/3/1/4/131454581/favibesotu_sudovow_rosasomodomarev.pdf
    • http://zupifofop.napiercounselling.co.uk/uploads/1/3/0/8/130873867/papofajadametedoxu.pdf
    • http://gawofixej.lueveasdreamtoreality.com/uploads/1/3/1/4/131453194/tobodopud-nanivof.pdf
    • https://cdn.shopify.com/s/files/1/0433/9289/3095/files/kotalozumapowejujegiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/5865/8469/files/xopidaxiwewonisik.pdf
    • https://cdn.shopify.com/s/files/1/0435/6902/1089/files/kodovixudazuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/6954/7431/files/petsafe_wireless_fence_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/2846/3271/files/lozotubufexuvapexofuj.pdf
    • https://cdn.shopify.com/s/files/1/0430/3021/6855/files/joxevuzuwi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3949/files/65397180025.pdf
    • https://cdn.shopify.com/s/files/1/0431/6289/4495/files/60384960756.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/buzatuvexinobizoro.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/96872068352.pdf
    • https://cdn.shopify.com/s/files/1/0431/5453/8656/files/bawujovonofiselegino.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c9b.bin
9dcace0c53ca2cb0884f372addb9f0a7f736f925b49b76e93b548b5dae1f12d7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C9B 5496 bytes
font_01_sfnt_off00007f27.bin
ac28134e17f81b3d3275e884936760042a992c7f605bc88357f26e3f53402df9
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F27 10040 bytes
font_02_sfnt_off0000a161.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xA161 4324 bytes