Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a71358e20ad386…

MALICIOUS

PDF

45.3 KB Created: 2020-08-02 05:02:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3cc39453d0d6ee34656b32c8fbd77b4 SHA-1: 2c6e72e795825440075983267fd97fda7fc6228c SHA-256: f7a71358e20ad386b705fbb6ac34a224ce25d62875ca06d76a417b9a0b5a226f
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains text related to accounting and includes the primary malicious URL. The presence of numerous embedded links to external PDFs suggests an attempt to generate traffic or distribute further malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=which+of+the+following+best+describes+accounting
    • http://files.hhnailstrips.com/uploads/1/3/1/6/131606262/9613797.pdf
    • http://files.pergusconsulting.com/uploads/1/3/2/7/132741348/5087168.pdf
    • http://files.thecoalitionict.org/uploads/1/3/1/4/131406610/bovetovipuvoten_rirenelob_doxadivopaxere.pdf
    • http://files.terencejiam.com/uploads/1/3/0/9/130969693/3496159.pdf
    • http://files.dee-lightful.org/uploads/1/3/1/6/131637163/fiwewurepobese_viratabok_rubodamabuzukiz_gezeraxezawu.pdf
    • https://cdn.shopify.com/s/files/1/0440/6099/9830/files/rivoti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zemivok.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6521/files/dutom.pdf
    • https://cdn.shopify.com/s/files/1/0440/8098/8325/files/wow_classic_thieves_tools.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1651/files/paxuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/8215/3112/files/mixexobezipepupug.pdf
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/2016_chevy_malibu_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/60537518899.pdf
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/39555210380.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/tifuvijoreliwerovapipiti.pdf
    • https://cdn.shopify.com/s/files/1/0430/7707/5108/files/60213685739.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4882/files/dajisafazufipupugo.pdf
    • https://cdn.shopify.com/s/files/1/0437/4023/3880/files/rulukubikowadibudoruwosin.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_off0000710c.bin
7ef3e6a28f9afd4ff3cb0e6ea6e0d375d83cbd5bb3568b9d195d61f3f6b643c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x710C 5528 bytes
font_01_sfnt_off000083ec.bin
5bf97b22359db36f6b5decc4bddef5877e193eb4913f644f83bdd27f3a09951c
pdf-font-stream PDF embedded font (sfnt) at offset 0x83EC 10416 bytes