Malicious PDF — malware analysis report

Static analysis result for SHA-256 db17180c04ede7d0…

MALICIOUS

PDF

37.1 KB Created: 2020-08-08 02:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de07f3898a969fc485a676487deb13f3 SHA-1: cd9c2284901a9befe2a18b813f56450de9445e9b SHA-256: db17180c04ede7d03b2f06dc7f8a637be41eca30ea78bd97e4f1d82e54ac799f
140 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF contains a link farm and a specific redirector URL, indicating a malicious intent to lead the user to harmful content. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the redirection to known malicious infrastructure. Additionally, the 'SE_CALLBACK_LURE' heuristic suggests a potential callback phishing or tech-support scam pretext, further supported by the embedded URLs that mimic legitimate file hosting but are likely part of a larger lure. No scripts were extracted from this sample.

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.
  • 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
  • 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=biker+s+choice+catalog+pdf
    • http://files.wildernessrundachshund.com/uploads/1/3/1/3/131398164/4408287.pdf
    • http://files.valleyofthedunes.com/uploads/1/3/1/6/131607029/f69220b930.pdf
    • http://files.biorbnz.co.nz/uploads/1/3/0/8/130874394/366ca2e445.pdf
    • https://cdn.shopify.com/s/files/1/0432/3577/0535/files/saseposebanalebepegulu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2477/6354/files/virasusifapupaxi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2901/files/nidasiwalagavijidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/91232979852.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/46143793457.pdf
    • https://cdn.shopify.com/s/files/1/0437/4387/1128/files/varefakafezevurodovu.pdf
    • https://cdn.shopify.com/s/files/1/0443/7016/5916/files/formulaire_cerfa_13750.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6083/files/mewebegenulibizidajata.pdf
    • https://cdn.shopify.com/s/files/1/0434/6127/9896/files/70642468765.pdf
    • https://cdn.shopify.com/s/files/1/0427/9166/5830/files/95728083574.pdf
    • https://cdn.shopify.com/s/files/1/0430/5181/0969/files/velitodafenudumik.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_off000047d4.bin
c4dc31d11c68e7103d2b5384e8e18ca03184604e9669078fb447d132c082d273
pdf-font-stream PDF embedded font (sfnt) at offset 0x47D4 5212 bytes
font_01_sfnt_off000059a3.bin
d9db6bacd33bcc794439ec4316772e106c6c7beca2c8a96cc40282d1222dc9b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x59A3 9448 bytes
font_02_sfnt_off000079aa.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AA 4324 bytes