Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc2484a7d1da7cc…

MALICIOUS

PDF

66.7 KB Created: 2020-08-07 00:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 374a7b03f2e8c1d5e5c76ee285a58162 SHA-1: 82104a8947b4e304406223a3c1ef94c353d5cbbe SHA-256: ecc2484a7d1da7cc7bd5edcdacdf2a8e888c63504019b8f8988f1e3d27c32fa2
152 Risk Score

Malware Insights

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

The PDF contains a link farm and a primary malicious redirector URL, suggesting a phishing or scam attempt. The document body, though heavily obfuscated, contains the text 'Banking regulation act 1934 pdf' and the malicious URL, indicating a lure to trick users into clicking the link. The presence of numerous links to external PDFs, many hosted on Shopify, points to a link farm used for SEO poisoning or distributing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=banking+regulation+act+1934+pdf
    • http://files.glowmedica.com/uploads/1/3/2/3/132303117/673f698.pdf
    • http://files.danaeirismcqueen.com/uploads/1/3/1/4/131438240/8287472.pdf
    • http://palek.circleoffriendspreschool1.com/uploads/1/3/1/4/131407406/kugagejabeno_denawegaxorefu_gimupixo.pdf
    • https://cdn.shopify.com/s/files/1/0437/7241/2055/files/tazemoxusa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/weditarozabawexo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9898/8954/files/2640889811.pdf
    • https://cdn.shopify.com/s/files/1/0434/5584/0409/files/59522534236.pdf
    • https://cdn.shopify.com/s/files/1/0429/6795/7658/files/mafukiruxabediwekisejufe.pdf
    • https://cdn.shopify.com/s/files/1/0429/7608/4117/files/25264585939.pdf
    • https://cdn.shopify.com/s/files/1/0435/7586/9599/files/57139824300.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gidawibozifuniji.pdf
    • https://cdn.shopify.com/s/files/1/0436/2564/4192/files/17003508823.pdf
    • https://cdn.shopify.com/s/files/1/0437/5258/7415/files/24818777211.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/crenated_tongue.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_off0000b051.bin
f09bd88b2c2f171618587c344e33722beefbfe384296a266be34e5fb1482fe59
pdf-font-stream PDF embedded font (sfnt) at offset 0xB051 5716 bytes
font_01_sfnt_off0000c3ec.bin
8f48a41ceb401669b35eab4ce064e83849a1636e6e2aa586b60e0cfec26a3e02
pdf-font-stream PDF embedded font (sfnt) at offset 0xC3EC 10572 bytes
font_02_sfnt_off0000e838.bin
c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE838 16164 bytes