Malicious PDF — malware analysis report

Static analysis result for SHA-256 b84bb6bb0e14b4c6…

MALICIOUS

PDF

40.2 KB Created: 2020-08-09 06:46:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76572e2bfbaad6cabba41698ceafa222 SHA-1: eaafbd2d557c3c062c64b692434beb6aabc80da6 SHA-256: b84bb6bb0e14b4c6af7ec2a67e483b6c32605c5382d454c4d75411d82389da89
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, including a critical redirector link to ttraff.com. This indicates a likely attempt to lure the user to malicious infrastructure. The document body is heavily obfuscated and contains the primary malicious URL, suggesting it's part of a phishing or scam campaign.

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.com/pify?keyword=auricularia+fuscosuccinea+pdf
    • http://files.binksgames.com/uploads/1/3/1/3/131384335/9959125.pdf
    • http://wufufig.parentuniversitynrp.org/uploads/1/3/1/4/131437423/f3190dd.pdf
    • http://files.john-creations.com/uploads/1/3/0/7/130776645/2364247.pdf
    • https://cdn.shopify.com/s/files/1/0438/2290/7554/files/c_or_k_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/2076/2783/files/rokowukujikifusibara.pdf
    • https://cdn.shopify.com/s/files/1/0440/2728/1558/files/57042725964.pdf
    • https://cdn.shopify.com/s/files/1/0435/7790/1214/files/logica_e_algebra_de_boole_jacob.pdf
    • https://cdn.shopify.com/s/files/1/0427/5470/3526/files/kubaxiwujukofodirak.pdf
    • https://cdn.shopify.com/s/files/1/0428/6421/4175/files/kofudezezapomubazu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/fulevopelubozo.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/perceptual_barriers_to_communication.pdf
    • https://cdn.shopify.com/s/files/1/0433/2729/1544/files/xatokatudorurezilosizor.pdf
    • https://cdn.shopify.com/s/files/1/0440/7613/8648/files/fugedibotixor.pdf
    • https://cdn.shopify.com/s/files/1/0434/6534/3133/files/gozetuwowatanofawabojowin.pdf
    • https://cdn.shopify.com/s/files/1/0439/4424/7451/files/cisco_3750_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0451/8179/6503/files/gemerinexajukubifala.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_off00005fad.bin
56fb502c3c6cc663583fc4451a53e313814f8de5ea77f5de452a32bee6c6ec2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAD 5140 bytes
font_01_sfnt_off0000713c.bin
7f183ba0dabb191f10e50de68b6578ed85a9b2f3482a44014ec007e77cf1fa1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x713C 10008 bytes

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