Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4c55577b2be19a4…

MALICIOUS

PDF

61.9 KB Created: 2020-08-19 11:56:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 23fdfd47cf3a9a3bccef7eab1f358045 SHA-1: ec37acff1c32affb474fffbe5b01bb19c553a9bb SHA-256: c4c55577b2be19a49a132adca820de2fe6a0996ca77dbde062bc533c43c063b6
130 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a link to 'https://ttraff.cc/pify?keyword=avatar+movie++in+telugupalaka', which is likely used to obscure the final malicious destination. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic and the document body containing a call-to-action phrase further support the lure-based attack pattern. The file is likely a downloader or part of a phishing campaign.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=avatar+movie++in+telugupalaka
    • http://vesukix.serepartners.com/uploads/1/3/1/3/131383726/suluzidof.pdf
    • https://cdn.shopify.com/s/files/1/0429/6107/6387/files/comment_apprendre_l_anglais_facilement.pdf
    • https://cdn.shopify.com/s/files/1/0440/0542/5310/files/vovegukesuxovizid.pdf
    • https://cdn.shopify.com/s/files/1/0431/7492/0347/files/12589090614.pdf
    • https://cdn.shopify.com/s/files/1/0434/6540/8662/files/55459120220.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7096/files/spell_check_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/83605448967.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/adb_driver_samsung_s4.pdf
    • https://cdn.shopify.com/s/files/1/0434/0704/8860/files/vomegadalepijufudak.pdf
    • https://cdn.shopify.com/s/files/1/0430/9726/0192/files/93188325552.pdf
    • https://cdn.shopify.com/s/files/1/0428/1935/4791/files/business_administration_definition.pdf
    • https://cdn.shopify.com/s/files/1/0437/2702/8375/files/lowrance_elite_4_manual.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000797d.bin
51742b4c4a82820dace59c57e6fad2914acd5798dfba13aeeeb4c3da9b0d6b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x797D 3904 bytes
font_01_sfnt_off0000874e.bin
419759fc4e93b5ba259813159e9c8f44c707027b608799819fe2edfccc4ec2a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x874E 5076 bytes
font_02_sfnt_off00009880.bin
9b803b1c5b35f22e41bfd555e2319a49fbc234a876f96b8fc1c0db3b0c9bf84a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9880 6800 bytes
font_03_sfnt_off0000ac6c.bin
43a72db2a2a893d6d90c198a84547a8060f5d491c30493c93271322536c92856		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC6C 7268 bytes
font_04_sfnt_off0000c253.bin
41d2e207d72923ecf1886c101532c2458bec5b882e0e259e529eaabe337bba33		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC253 12196 bytes

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