Malicious PDF — malware analysis report

Static analysis result for SHA-256 27c02f1a277fe5aa…

MALICIOUS

PDF

73.7 KB Created: 2020-08-14 02:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7577e71182ac39fb410b7fac2f8e474f SHA-1: 65c41935e6ac1b7e8f17e2810ae795742daa5346 SHA-256: 27c02f1a277fe5aaf94fe58efb552718065caf16874ad6aeb56ab304ae9c66db
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'ttraff.ru'. The document body, although heavily obfuscated, contains text related to 'Avalon hill bismarck rules pdf' and the URL 'https://ttraff.ru/pify?keyword=avalon+hill+bismarck+rules+pdf', suggesting a lure to a malicious site. 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.ru/pify?keyword=avalon+hill+bismarck+rules+pdf
    • http://zaxavewip.lomavistamortuary.com/uploads/1/3/0/9/130969352/dimep-rimepiramalu-rigono-nevexe.pdf
    • http://files.darenandco.com/uploads/1/3/0/7/130776720/4459839.pdf
    • http://papijo.stephaniehunder.com/uploads/1/3/0/8/130873995/0c71addc42a.pdf
    • http://files.ajhealthylifestyles.com/uploads/1/3/0/7/130775137/nupen_titadokonetef.pdf
    • http://files.firstchristianwinchester.org/uploads/1/3/1/4/131438423/4516663.pdf
    • https://cdn.shopify.com/s/files/1/0435/9307/2808/files/offline_english_to_urdu_dictionary_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0202/6393/files/34232723627.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3258/files/puragiji.pdf
    • https://cdn.shopify.com/s/files/1/0430/8582/4164/files/jupivusekaletak.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/62004522757.pdf
    • https://cdn.shopify.com/s/files/1/0436/5680/6565/files/mudevorujagololuji.pdf
    • https://cdn.shopify.com/s/files/1/0435/1790/3008/files/cahier_de_vacances.pdf
    • https://cdn.shopify.com/s/files/1/0448/2121/7442/files/contoh_abstrak_tesis.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/4100075892.pdf
    • https://cdn.shopify.com/s/files/1/0433/1264/4251/files/xukogizumapenagevojafimus.pdf
    • https://cdn.shopify.com/s/files/1/0433/1995/1513/files/23892685798.pdf
    • https://cdn.shopify.com/s/files/1/0433/2997/8526/files/51384250454.pdf
    • https://cdn.shopify.com/s/files/1/0429/0756/6239/files/chaupai_sahib_path_file.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5cd.bin
739ba76edab8de350b264a3cf8038933cd0c837038a4a0bd97c2566db5d90fb4
pdf-font-stream PDF embedded font (sfnt) at offset 0xC5CD 5648 bytes
font_01_sfnt_off0000d8cc.bin
f7ae78276b495c97d07f0b6e760b43e26ceefb97ed666fd83e48e742b34aa6a7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8CC 13356 bytes
font_02_sfnt_off00010371.bin
568ba79a67aaa918cbf176fe4c499db45c1a111dbc02b7f3121b3d9cf15fc6e7
pdf-font-stream PDF embedded font (sfnt) at offset 0x10371 16296 bytes