Malicious PDF — malware analysis report

Static analysis result for SHA-256 c91ddf3c4cbdda21…

MALICIOUS

PDF

62.1 KB Created: 2020-08-15 06:04:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3972d9b4a32ff0c243d83d606e7e5402 SHA-1: ace8035bd62e5e523f81a60022c247c0527f6e2d SHA-256: c91ddf3c4cbdda214e18b47a0aa24a489cff0c9da02c00efaa5f6332a632ec09
140 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'report dangerous driving' and includes the malicious URL, suggesting a lure. The presence of a link farm and a callback phishing lure heuristic further supports the malicious intent. The primary malicious IOC is the redirector URL which likely leads to further stages of an attack.

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=report+dangerous+driving+online+west+yorkshire
    • http://files.hibbardsportsclub.com.au/uploads/1/3/2/3/132303082/cea1231.pdf
    • http://bokixorev.fuelsmarketing.com/uploads/1/3/2/6/132682905/giwedegagipoj_repepex_wawazove.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/39208183892.pdf
    • https://cdn.shopify.com/s/files/1/0432/8790/4411/files/kafiwokifafuwuboga.pdf
    • https://cdn.shopify.com/s/files/1/0438/7930/1288/files/writing_polynomials_in_standard_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/7940/1634/files/vehicle_bill_of_sale_oklahoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/casual_leave_letter_format.pdf
    • https://cdn.shopify.com/s/files/1/0437/9744/6818/files/agronomic_crops.pdf
    • https://cdn.shopify.com/s/files/1/0431/3668/0098/files/wikofu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9937/4233/files/3306415679.pdf
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/67212792657.pdf
    • https://cdn.shopify.com/s/files/1/0446/9476/5724/files/axolotl_care_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/19425955251.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_off0000a6fc.bin
9abadc5bda01d834df30083e1ba04be5c02f6c2d8b5826a50db2605390558105
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6FC 5428 bytes
font_01_sfnt_off0000b985.bin
744f8ba7c64157e436cc787b3fa2368e0bf69a9635d15d5ddf9564308024559e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB985 10396 bytes
font_02_sfnt_off0000dd15.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD15 4324 bytes