Malicious PDF — malware analysis report

Static analysis result for SHA-256 c947585dfafe7444…

MALICIOUS

PDF

42.7 KB Created: 2020-08-13 04:45:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 53e195a5d85b81fb1950e619b608b637 SHA-1: 9df3a72123eb51a22c32a068c829cda3608649dc SHA-256: c947585dfafe7444372ae41615956f739401bec87e77180ab4e93e6fde1d85c6
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating a likely phishing or SEO poisoning attack. The document body, though heavily corrupted, contains text related to 'Android studio 3.5 development essentials pdf' and a URL that appears to be a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=android+studio+3.+5+development+essentials+pdf, which is flagged as a malicious redirector. No scripts were extracted from this sample.

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.cc/pify?keyword=android+studio+3.+5+development+essentials+pdf
    • http://files.wholesale.fanhubnw.com/uploads/1/3/1/3/131379828/juvuzuvitaketik_vazaguxozizize.pdf
    • http://xakafixa.comiccutdown.com/uploads/1/3/1/4/131407227/pebipuligasurow.pdf
    • http://files.mariacioe-pena.com/uploads/1/3/1/1/131163943/6298000.pdf
    • http://safikotu.lensdefender.com/uploads/1/3/0/9/130969306/7550932.pdf
    • https://cdn.shopify.com/s/files/1/0431/0935/1585/files/22841580167.pdf
    • https://cdn.shopify.com/s/files/1/0447/6986/9975/files/basic_integral_formulas.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/patterns_of_enterprise_application_architecture_1st_edition.pdf
    • https://cdn.shopify.com/s/files/1/0435/4143/0440/files/55323435250.pdf
    • https://cdn.shopify.com/s/files/1/0435/2468/5975/files/gasidexemejewajapu.pdf
    • https://cdn.shopify.com/s/files/1/0437/0602/4101/files/vegetubozagenelobip.pdf
    • https://cdn.shopify.com/s/files/1/0433/9980/7126/files/65898051099.pdf
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/aegon_religare_iterm_plan.pdf
    • https://cdn.shopify.com/s/files/1/0430/5443/2410/files/tituxukowukezinolov.pdf
    • https://cdn.shopify.com/s/files/1/0440/0162/4214/files/67680143045.pdf
    • https://cdn.shopify.com/s/files/1/0429/6887/5157/files/integral_calculus_by_shanti_narayan.pdf
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/85151304115.pdf
    • https://cdn.shopify.com/s/files/1/0438/3830/8512/files/sokuvoxorituvo.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/
    • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068d9.bin
8829d287f1954304faee2a30b8794d0e1513aff435ad487f365c891bb5c8babf
pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 5556 bytes
font_01_sfnt_off00007bb2.bin
1078356fb95abc772d2ea1313193243aaeee162c66fcdeb14e773201c5c90730
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB2 9936 bytes