Malicious PDF — malware analysis report

Static analysis result for SHA-256 510c138be9737e56…

MALICIOUS

PDF

42.2 KB Created: 2020-08-02 23:07:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e55dbb6c2df9d19d7ca78b7a645c23b1 SHA-1: 12484bfe24500ed5f9945f464a009402e580a7f2 SHA-256: 510c138be9737e56acb74b46dc02182de868c5eb1640c711c3d131a66266606e
142 Risk Score

Malware Insights

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

The PDF contains a link farm designed to appear as a service manual download, with a primary malicious redirector URL. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates the link at 'https://ttraff.com/pify?keyword=kubota+rtv+900+service+manual+pdf+download' leads to known malicious infrastructure. The 'SE_CALLBACK_LURE' heuristic suggests a social engineering pretext, likely to trick users into clicking the link. The embedded URLs are part of a link farm strategy to improve search engine ranking and distribute 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.
  • 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.com/pify?keyword=kubota+rtv+900+service+manual+pdf+download
    • http://files.stayfrosty.co/uploads/1/3/1/4/131411857/d09353f5390.pdf
    • http://files.robkodama.com/uploads/1/3/0/9/130969346/kevujosuwesixudarera.pdf
    • http://files.vistapeaklbasketballgirls.com/uploads/1/3/0/8/130814112/c7e6a5a203.pdf
    • http://files.kdchanelbeauty.com/uploads/1/3/1/4/131437636/6780050.pdf
    • http://files.lodgeprestwick1060.com/uploads/1/3/1/4/131453111/kosogopeti-vamixa.pdf
    • https://cdn.shopify.com/s/files/1/0439/0970/9976/files/15513379515.pdf
    • https://cdn.shopify.com/s/files/1/0427/9504/0924/files/6029998650.pdf
    • https://cdn.shopify.com/s/files/1/0439/6885/6222/files/vrchat_full_body_tracking_fingers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kepudanunakadop.pdf
    • https://cdn.shopify.com/s/files/1/0429/2755/4723/files/92593883174.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/generac_gp_series_5500.pdf
    • https://cdn.shopify.com/s/files/1/0431/2953/6676/files/40119003640.pdf
    • https://cdn.shopify.com/s/files/1/0433/4590/3774/files/toyota_4runner_manual_transmission_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/xegavib.pdf
    • https://cdn.shopify.com/s/files/1/0437/7916/2263/files/50001962826.pdf
    • https://cdn.shopify.com/s/files/1/0438/0770/3201/files/3187401327.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_off000064f1.bin
8cc9e53ddb6d3baabd8d2874bc08c3ce1af35e757687c4db755915eb555d8c99
pdf-font-stream PDF embedded font (sfnt) at offset 0x64F1 5860 bytes
font_01_sfnt_off000078e3.bin
6f1e3035f7488f02d8868da397911bdd5184c693709862bdc60a84ca3ad7f1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x78E3 10264 bytes