Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4a89db321ca6b46…

MALICIOUS

PDF

46.3 KB Created: 2020-08-23 12:44:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8adef41105ed34aa323f38701b8ad43d SHA-1: 2be1c9cc8a36668337c81b23ec163e411583013f SHA-256: f4a89db321ca6b46a23acaac3a7c7a79008e17d4d826680c867220ea904407a3
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify URLs but one critical link to a known malicious redirector at ttraff.ru. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

Heuristics 3

  • 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.
  • 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.ru/pify?keyword=multiplication+with+decimal+points+worksheets
    • http://files.glynhaynie.net/uploads/1/3/1/3/131380875/gagawagagoka.pdf
    • http://files.tapirday.org/uploads/1/3/1/4/131453996/5214741.pdf
    • http://files.investigations-intelligence.com/uploads/1/3/0/8/130874612/kivekebuti.pdf
    • http://files.bondybluereview.com/uploads/1/3/0/8/130873715/a07577a8.pdf
    • http://files.nsccfreedomtraining.com/uploads/1/3/1/6/131636625/805d71575b0e.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/clinical_services_capability_framework.pdf
    • https://cdn.shopify.com/s/files/1/0460/7324/9956/files/canon_imageprograf_ipf670_inkjet_large-_format_printer.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65939759823.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.pdf
    • https://cdn.shopify.com/s/files/1/0432/7663/2214/files/neriferatupumuterosesu.pdf
    • https://cdn.shopify.com/s/files/1/0427/8029/5334/files/87181390246.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/pawavexelezapeket.pdf
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/jigesulaneliwamezepomak.pdf
    • https://cdn.shopify.com/s/files/1/0431/7990/1096/files/lotr_risk_rules.pdf
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/51688058015.pdf
    • https://cdn.shopify.com/s/files/1/0435/9582/5320/files/lanezomazirikaziw.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/83871575616.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_off00007659.bin
3716c6c95f715615167ecd6424f9641e85082d65cec3d699af848ed8cdd88433		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7659 5472 bytes
font_01_sfnt_off000088d9.bin
e188aa3c69073440ac2f589c87e1108cec28cc207fa59379c17057cf30a272ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 10432 bytes

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