Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f952c396e72f354…

MALICIOUS

PDF

47.1 KB Created: 2020-08-29 09:52:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 39c9634f774a310d399aecea11a84b67 SHA-1: 6e719861356503511b3a88d0d4966a4c11bac37c SHA-256: 3f952c396e72f3542b17db44942bf9e64a5888ffa9015d1eb68e8254bd6917fc
160 Risk Score

Malware Insights

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

The PDF contains a lure for an advance-fee scam, disguised as a "Tetris blitz hack" or lottery prize, directing users to a malicious redirector at ttraff.ru. The document also hosts a large number of external PDF links, many hosted on Shopify, likely for SEO manipulation or to obscure the primary malicious link. No scripts were extracted, but the presence of a malicious redirector and advance-fee scam lure strongly indicates a phishing or social engineering 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/wix?keyword=tetris+blitz+hack
    • https://cdn.shopify.com/s/files/1/0438/9509/5464/files/37351067825.pdf
    • https://cdn.shopify.com/s/files/1/0434/3015/0300/files/senior_accountant_job_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/5055/6821/files/nawedolo.pdf
    • https://cdn.shopify.com/s/files/1/0462/5855/2981/files/njstar_chinese_word_processor.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/75929075043.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f4de46e75784e959ddfc665609aab1b.pdf
    • https://static.usrfiles.com/ugd/b8c837_f721d03694f1425494fa6545c4b64ef2.pdf
    • https://cdn.shopify.com/s/files/1/0435/4896/7061/files/factorio_8_to_12_balancer.pdf
    • https://cdn.shopify.com/s/files/1/0447/2917/2122/files/botubisorijo.pdf
    • https://static.usrfiles.com/ugd/b8c837_81745db88dcf41319b1575c6fd3f4e06.pdf
    • https://static.usrfiles.com/ugd/b8c837_b89ff3ab74034586aba4ecea6fc3d600.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e273e18c1004126acd85c1c5cee17c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_1084a64bd8f34b3bb5be5b58ab6427ce.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_off00006005.bin
539da40a475732d220aab55937d77bb385c06065c75b6a2c13a3dcc8e131d771
pdf-font-stream PDF embedded font (sfnt) at offset 0x6005 7608 bytes
font_01_sfnt_off00007a1d.bin
dc497de2b493c6a988a71e0f4d57d378d5e2e812998d524c22378d4fd7304ab6
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A1D 5088 bytes
font_02_sfnt_off00008b62.bin
7591df5b93fc5032da0df5306e6f38869f095b501d48a7c167f091b24036741f
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B62 10736 bytes