Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb83ebec20215aa9…

MALICIOUS

PDF

38.9 KB Created: 2020-08-20 11:27:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5affb6cc306d02c42ba93a99f0df28ea SHA-1: ffd93729f2309e0aac9294a9e5b4c425f38b91d5 SHA-256: fb83ebec20215aa90b5854d16b711d522c8355de0788ee033c149f131f932b65
120 Risk Score

Malware Insights

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

The PDF document contains a link farm designed to lure users with the promise of 'adb frp bypass for pc'. The primary malicious link, https://ttraff.ru/pify?keyword=adb+frp+bypass++for+pc, redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains references to this lure and the malicious URL. The presence of numerous other PDF links suggests a link farm or SEO poisoning tactic to distribute the malicious payload.

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=adb+frp+bypass++for+pc
    • http://files.danielklittleton.com/uploads/1/3/1/4/131452733/vikeguladopikaj-tadalorefeji-zaramamurabavut.pdf
    • http://files.moysmovies.com/uploads/1/3/0/8/130814058/3461015.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12035000993.pdf
    • https://cdn.shopify.com/s/files/1/0435/6944/7073/files/semazuwatipuseza.pdf
    • https://cdn.shopify.com/s/files/1/0433/0441/9478/files/94324263836.pdf
    • https://cdn.shopify.com/s/files/1/0429/9112/4643/files/friends_season_1_kickass.pdf
    • https://cdn.shopify.com/s/files/1/0433/4351/1706/files/mineropak.pdf
    • https://cdn.shopify.com/s/files/1/0453/9875/3448/files/lupiwaf.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/bisudajorowoter.pdf
    • https://cdn.shopify.com/s/files/1/0435/4372/4186/files/75683302910.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.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_off00005a55.bin
e9027faab6711b11869d7efa8ae32f9d815b5ea7f4e0f10391cb959adc494617		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A55 5348 bytes
font_01_sfnt_off00006c92.bin
efad45822b3dfbf857a1db9dcdbed23fede53a492252f4db49be4736e9dbfa17		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C92 10224 bytes

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