Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebf87720504ef111…

MALICIOUS

PDF

39.5 KB Created: 2020-08-05 17:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 503ccdfc4e1ed6c1714d46a16b14f331 SHA-1: ba91ff6da64a54f5748e1fb44e8912d95c90d1c0 SHA-256: ebf87720504ef1111b2a359cd4cdf466cbe88432d200a6d3bf97bee1552b083b
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=budaya+populer+adalah+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on cdn.shopify.com. The document body contains garbled text but includes the malicious URL and mentions 'wkhtmltopdf', suggesting it was generated by a tool. The primary attack pattern involves luring the user to a malicious redirector.

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=budaya+populer+adalah+pdf
    • http://files.thegraceofbeing.org/uploads/1/3/2/7/132740905/8643396.pdf
    • http://files.jacquevilmainmusic.com/uploads/1/3/1/3/131379382/3593021.pdf
    • http://files.microneedleregulatory.org/uploads/1/3/0/9/130969989/waroxugos-powimij-kobesozinot-ligidenibiku.pdf
    • http://files.comfortdogsfortworth.com/uploads/1/3/1/3/131383283/bezoxapawimunura.pdf
    • http://files.arthurchiaravalli.com/uploads/1/3/0/7/130776196/4658505.pdf
    • https://cdn.shopify.com/s/files/1/0429/1156/3932/files/turedapajevexawemoduge.pdf
    • https://cdn.shopify.com/s/files/1/0431/6217/3602/files/kusisixoxubigerib.pdf
    • https://cdn.shopify.com/s/files/1/0429/8086/8255/files/80245474127.pdf
    • https://cdn.shopify.com/s/files/1/0429/9322/1783/files/pozukosukuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/5627/5362/files/bluetooth_christmas_lights.pdf
    • https://cdn.shopify.com/s/files/1/0437/7110/1346/files/electronics_hambley_2nd_edition.pdf
    • https://cdn.shopify.com/s/files/1/0436/3714/5753/files/79327349388.pdf
    • https://cdn.shopify.com/s/files/1/0435/1570/7551/files/tuxibituv.pdf
    • https://cdn.shopify.com/s/files/1/0432/2790/6206/files/dusajajudasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/3406/7615/files/agate_cnrs.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/75989371897.pdf
    • https://cdn.shopify.com/s/files/1/0434/5203/9324/files/que_es_un_acta_constitutiva_de_una_empresa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7840/9622/files/65401448328.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_off00005f90.bin
404e1a4000bee312c3319d04f7f5d2dccc869b3ea3c672ba6633f8dc31ae67fb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F90 5104 bytes
font_01_sfnt_off000070ef.bin
10161e70664d6a8a88e54de911e49c51a3525918d623de62fd38d84de36173eb
pdf-font-stream PDF embedded font (sfnt) at offset 0x70EF 9436 bytes