Malicious PDF — malware analysis report

Static analysis result for SHA-256 246932c6598be157…

MALICIOUS

PDF

51.2 KB Created: 2020-08-12 06:31:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80ce4239ce342a3813a252aa840aeec8 SHA-1: c1348c14f4b016d6935a9cf995e0683cdd1760ca SHA-256: 246932c6598be157072814841e360b737cb500b50fb54b6adecbcc51ee01d282
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to drive traffic to malicious infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=seventh+day+adventist+doctrines+pdf, which is flagged as 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.ru/pify?keyword=seventh+day+adventist+doctrines+pdf
    • http://pamopi.nicolesbadassblog.com/uploads/1/3/1/1/131164250/05b9fc60a7b8f.pdf
    • http://files.scientology-siliconvalleymission.org/uploads/1/3/1/6/131606876/xiliduxapiwifodomudo.pdf
    • http://files.thewriterandtheriver.com/uploads/1/3/0/8/130814052/juvivuxo_pikozovebi_kubuvadifufe_tumumejabaf.pdf
    • http://files.santafest.ca/uploads/1/3/0/8/130874380/61e5615.pdf
    • http://files.otterworksusa.com/uploads/1/3/1/4/131437351/tasegus-rekafi-zeganusisaj-jigavulef.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/buxigol.pdf
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/61518964717.pdf
    • https://cdn.shopify.com/s/files/1/0427/9622/0572/files/wezese.pdf
    • https://cdn.shopify.com/s/files/1/0438/2566/0066/files/26382849839.pdf
    • https://cdn.shopify.com/s/files/1/0430/7461/7511/files/65866144199.pdf
    • https://cdn.shopify.com/s/files/1/0432/3062/5950/files/wavezu.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/around_the_world_in_60_seconds_free.pdf
    • https://cdn.shopify.com/s/files/1/0439/2566/7995/files/83499831042.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5309/files/97156893978.pdf
    • https://cdn.shopify.com/s/files/1/0431/8865/0142/files/51053507415.pdf
    • https://cdn.shopify.com/s/files/1/0440/0427/8422/files/noxajanugegofavi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/business_research_management_notes.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4502/files/motasulawixezuzegumuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xokuwunojuvilil.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_off000089f3.bin
253f92efcd6c67e3195fadc2d28de8ac5b71cf1f36c2c1395d386b822fbef39a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89F3 5476 bytes
font_01_sfnt_off00009c95.bin
d560a2db139a1131b490e56989c8c7378c7651286c21ec1050409c3e5cba2f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C95 10160 bytes

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