Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c7405012a790dc7…

MALICIOUS

PDF

42.4 KB Created: 2020-08-13 12:39:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7ce411a1cdcb13988b0c90bdb7e3ffb2 SHA-1: cdfae393caca9c27f1015702ba91191af6572c2e SHA-256: 2c7405012a790dc71f94fe368129b98a2453543b7529947cd20c621d67c2aa9f
120 Risk Score

Malware Insights

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

The PDF file contains numerous links, with a critical heuristic firing indicating it's a malicious redirector. One prominent link, 'https://ttraff.com/pify?keyword=mariage+d+amour+easy+piano+pdf', appears to be a lure, disguised as a search result for a piano tutorial. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of a large number of external PDF links further supports the SEO link farm heuristic, indicating a likely attempt to drive traffic to potentially harmful 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=mariage+d+amour+easy+piano+pdf
    • http://files.vccburlington.org/uploads/1/3/2/7/132741556/7976703.pdf
    • http://terofi.westernheartsracing.com/uploads/1/3/0/7/130738721/2790838.pdf
    • http://files.heartfirejourneys.com/uploads/1/3/0/7/130738870/03ab49d.pdf
    • http://lixupit.chewysuz.com/uploads/1/3/1/6/131637814/4362dfe80e60b.pdf
    • https://cdn.shopify.com/s/files/1/0440/0440/9494/files/anatomy_and_physiology_2_final_exam.pdf
    • https://cdn.shopify.com/s/files/1/0437/8587/9713/files/xalosonodipozoxilakur.pdf
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/rigimafasivekazovetan.pdf
    • https://cdn.shopify.com/s/files/1/0435/6128/7839/files/87308693297.pdf
    • https://cdn.shopify.com/s/files/1/0432/7014/4158/files/zudijesilej.pdf
    • https://cdn.shopify.com/s/files/1/0455/7062/1605/files/work_permit_renewal_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/4686/3005/files/65987673535.pdf
    • https://cdn.shopify.com/s/files/1/0431/1128/4893/files/pomovagadipagewopoje.pdf
    • https://cdn.shopify.com/s/files/1/0434/5793/7561/files/10564023274.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6102/files/gudegugabowop.pdf
    • https://cdn.shopify.com/s/files/1/0435/1954/1416/files/39776718558.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/poduw.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8412/files/zajufavofomusila.pdf
    • https://cdn.shopify.com/s/files/1/0434/7356/7894/files/42245838166.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000457f.bin
122486bf1339dec7cb0b8082e1e155a3275ea9fc8b94ce2681be84e01adb54c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x457F 5436 bytes
font_01_sfnt_off000057ed.bin
53e8de73589fc21682140230f5c58806af5a425102db6a6bbbc0141fa55ba4b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57ED 3716 bytes
font_02_sfnt_off00006656.bin
41966abdd8ed10bfbd237eeaea67b6b24974aaf6ac4078b74f520e69f8df3b7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6656 9468 bytes
font_03_sfnt_off000086f4.bin
794d8cc090a449e0d460036171b2d5b2c749cb0dc3f17972c44626ada68ee3d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86F4 16168 bytes

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