Malicious PDF — malware analysis report

Static analysis result for SHA-256 235b3127de31f6e6…

MALICIOUS

PDF

59.8 KB Created: 2020-08-08 06:19:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f10ac3a5a626dfe09801b0c0323d0ca0 SHA-1: dfb7ae0007cc2445f9825cea88f39d9a590186e7 SHA-256: 235b3127de31f6e6e6832a62d189dda157e5c3e8e19120fba4dde743fec42d9c
182 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The document body, though garbled, contains a URL that is also flagged as a malicious redirector. This indicates the primary goal is to redirect the user to malicious infrastructure, likely for a phishing or scam campaign, possibly related to payment redirection as suggested by another heuristic.

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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=dell+r840+datasheet+pdf
    • http://sotede.nfordtransitsystem.com/uploads/1/3/2/6/132682076/67ab5e.pdf
    • http://files.centerofhopemtp.com/uploads/1/3/2/3/132302888/8e9a03ef9fcb98.pdf
    • http://files.approachapparel.com/uploads/1/3/1/3/131383664/8009279.pdf
    • http://files.yorkieskisses.com/uploads/1/3/1/4/131409009/dakowigazovewu.pdf
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/72846202843.pdf
    • https://cdn.shopify.com/s/files/1/0430/8421/8532/files/84876589494.pdf
    • https://cdn.shopify.com/s/files/1/0441/2915/7272/files/panera_bread_menu_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0560/files/64829108158.pdf
    • https://cdn.shopify.com/s/files/1/0431/9926/6979/files/99749831410.pdf
    • https://cdn.shopify.com/s/files/1/0427/4854/3142/files/14839972578.pdf
    • https://cdn.shopify.com/s/files/1/0445/3220/3679/files/counter_strike_go_sounds.pdf
    • https://cdn.shopify.com/s/files/1/0437/0278/0057/files/biquad_filter.pdf
    • https://cdn.shopify.com/s/files/1/0431/6377/9240/files/rixegebomatowekofuta.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sedafasejizal.pdf
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/gamidonalapadavemugegev.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/88156628227.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_off000099db.bin
40fb404ecb1fb9d0991744610c96bf4d0be7d4b0a82efae21f776f1470a99fd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x99DB 3548 bytes
font_01_sfnt_off0000a68f.bin
262a8266602863e0640b4d76b5efdac23abce5aca3adc3fbb4a73c852bd55ffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA68F 5552 bytes
font_02_sfnt_off0000b973.bin
00bcf9ec28b178eb7dcd5a298784f10413173aecf07b48c4f0b7295333956126		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB973 12300 bytes

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