Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2dc7e7cbf23a03…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 00:19:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 754d72d072d80547cbc0202d4fda9052 SHA-1: 5b38e9efab13bcf4cb60a41a3970a301fa4494e6 SHA-256: 4f2dc7e7cbf23a035dbdc81a532f18c3cf01bef69231e9056475a3107693f98f
148 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One critical heuristic indicates a malicious redirector link, suggesting the document is designed to lead users to harmful content. The document body, though heavily obfuscated, contains text related to 'types of cheques' and includes the malicious URL, reinforcing the lure. The presence of numerous PDF links and a malicious redirector suggests a link farm or SEO poisoning attack designed to ensnare unsuspecting users.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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/wb?keyword=types%20of%20cheques%20in%20pakistan%20pdf
    • http://sunagi.lostnlavagathering.com/uploads/1/3/1/6/131606227/4ea30a4cef504c.pdf
    • http://fejebi.amymaddoxphotography.com/uploads/1/3/1/1/131164250/8350555.pdf
    • http://tabos.daeodain.com/uploads/1/3/2/8/132816066/mupex_milevufuxad_wamavuvazo_lorub.pdf
    • http://files.themasonjar101.com/uploads/1/3/0/7/130776089/gitujedulekopoz-jokobivij-zuxokiziralazi.pdf
    • https://cdn.shopify.com/s/files/1/0436/0699/9203/files/4865294929.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/geputukugevixegoxap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/54999695778.pdf
    • https://cdn.shopify.com/s/files/1/0429/2201/6934/files/5351566195.pdf
    • https://cdn.shopify.com/s/files/1/0434/0996/5212/files/dezusekononasedoniwox.pdf
    • https://cdn.shopify.com/s/files/1/0432/7414/1864/files/jetetufa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3505/files/kubataji.pdf
    • https://cdn.shopify.com/s/files/1/0432/6011/7160/files/49517851341.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0813/files/bacterina_triple_bovina.pdf
    • https://cdn.shopify.com/s/files/1/0427/8976/5276/files/70529899221.pdf
    • https://cdn.shopify.com/s/files/1/0436/3078/8758/files/wegerogurogizod.pdf
    • https://cdn.shopify.com/s/files/1/0430/2697/2825/files/xikejakipinu.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_off00005bcd.bin
2d4fe42cd728c10a56a811571cdccc8e6a17586159618a01f29c117be73dd92f
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BCD 5356 bytes
font_01_sfnt_off00006e0c.bin
8f80198b93297fb1eb87b1d37703afb607511e248f92dac1f98c6a36e402408a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E0C 9612 bytes