Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dacbbbaee2de1c3…

MALICIOUS

PDF

46.0 KB Created: 2020-09-18 16:20:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e771f3658d527ad62a42a884953dffc SHA-1: ef944856b4ce61d238a4e4c27948e3eba481744e SHA-256: 2dacbbbaee2de1c3db2b67058e69870a06e86b153794ff357cc0f4cc13fdb9e4
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=yorktese+near+me'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on Shopify. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be luring the user to the malicious redirector.

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.me/wix?keyword=yorktese+near+me
    • https://cdn.shopify.com/s/files/1/0486/0192/3749/files/fenatiwirevajofizopazedo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0204/4316/files/89402111333.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/carl_jung_biografia.pdf
    • https://cdn.shopify.com/s/files/1/0434/7956/4448/files/zezubomirefofojejujetuzos.pdf
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/abstract_reasoning_test_test_2.pdf
    • https://cdn.shopify.com/s/files/1/0435/9595/6386/files/gimuguxonipifuxudak.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4688/files/32705528728.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/xenavedefepi.pdf
    • https://cdn.shopify.com/s/files/1/0430/1268/5977/files/fosiropewepumomavalatog.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/befajaxizekadekusis.pdf
    • https://cdn.shopify.com/s/files/1/0457/7833/7958/files/mekuxewobala.pdf
    • https://cdn.shopify.com/s/files/1/0432/2027/1264/files/tozewovekovotubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8397/2256/files/psychological_contract_theory.pdf
    • https://cdn.shopify.com/s/files/1/0437/3017/4113/files/canadian_hypertension_guideline.pdf
    • https://cdn.shopify.com/s/files/1/0439/3834/9211/files/resultant_forces_2_worksheet_answers.pdf
    • https://cdn.shopify.com/s/files/1/0431/6663/0050/files/unbroken_curses_book.pdf
    • https://cdn.shopify.com/s/files/1/0439/1187/2667/files/spotify_premium_apk_hack_latest_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7563/files/expanded_notation_worksheets_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/7338/6136/files/2158391651.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_off00006325.bin
54325fca4e732e74f0721e53e7afaaaf21ffadfd3660f4be4c35e45bfcabedd5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6325 4564 bytes
font_01_sfnt_off0000727b.bin
a33121b09ab195898d2d891dd56ca7f2e1a220455828ef2f552c1850a895dd5b
pdf-font-stream PDF embedded font (sfnt) at offset 0x727B 13248 bytes
font_02_sfnt_off00009d01.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x9D01 4324 bytes