Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d23d4d08c74b13a…

MALICIOUS

PDF

39.5 KB Created: 2020-08-18 13:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a81b0612bfee5e8a85b8c9b1a86839d SHA-1: 7b58bf642ce8811eb1ff710d09ade32957e54c2c SHA-256: 3d23d4d08c74b13a571043c0f3f944f8e22d703fadcb46a971ced740e1c46fe4
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, identified as a PDF link farm. One of these links, https://ttraff.com/pify?keyword=bazaar+movie+song+ming+se, points to known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to external malicious sites.

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=bazaar+movie+song+ming+se
    • http://files.akakeb.com/uploads/1/3/0/8/130813558/nitopufanenuxa.pdf
    • http://rarigatoj.tuesdayfilms.co.uk/uploads/1/3/0/8/130873863/2382715.pdf
    • http://files.donnaclarkteacherportfolio.com/uploads/1/3/2/6/132683181/ed5ef0f609fad56.pdf
    • http://suwakavo.ourcollaborativeteam.com/uploads/1/3/0/8/130874493/c9aadd8.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/autopage_xt_33.pdf
    • https://cdn.shopify.com/s/files/1/0434/3378/7542/files/morphology_and_classification_of_bacteria.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/jurnal_rheumatoid_arthritis_adalah.pdf
    • https://cdn.shopify.com/s/files/1/0430/3876/9303/files/algebraic_structures_groups.pdf
    • https://cdn.shopify.com/s/files/1/0429/0828/7132/files/phorcas_letter_of_recommendation.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/aberdeen_city_council_housing_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/8850/1143/files/fatotopewux.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/partial_differentiation_chain_rule.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/76991203466.pdf
    • https://cdn.shopify.com/s/files/1/0438/3395/0358/files/8933788374.pdf
    • https://cdn.shopify.com/s/files/1/0438/3549/0466/files/kavunozazadafada.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_off00005cb3.bin
54c525b6456230f3030b92be178c4c4f28f85beee4247b93a9676a066f7c0d18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB3 5132 bytes
font_01_sfnt_off00006e22.bin
ebd6412f49568c27cc34849cbad7ae13b6849b1c1ea5eaea9a0436c96050fefd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E22 10360 bytes

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