Malicious PDF — malware analysis report

Static analysis result for SHA-256 d07a0dc4efe11f1c…

MALICIOUS

PDF

47.2 KB Created: 2020-08-04 01:59:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c8505836b0ec63f89f8088227b86434 SHA-1: d6d61d7a1654abf945833b3a8640425270106ef8 SHA-256: d07a0dc4efe11f1c86113e9c481a836f1bdb5a54fad4d2069d3cfd06c935a2a1
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a 'syllabus' lure, which is a common tactic for phishing or malware distribution. The primary malicious URL identified is https://ttraff.ru/pify?keyword=bcom+sol+syllabus+pdf, which is likely used to redirect the user to a further malicious destination.

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=bcom+sol+syllabus+pdf
    • http://files.iifbc.com/uploads/1/3/1/3/131379894/wezobasometado.pdf
    • http://files.neomoonart.com/uploads/1/3/2/6/132696512/sejibimamilitomanib.pdf
    • http://files.heathernorrisart.com/uploads/1/3/2/6/132682303/6425092.pdf
    • http://files.quixotecommunities.org/uploads/1/3/0/8/130874233/dosexisalimag-zuvowizadesupa.pdf
    • http://files.qui
    • https://cdn.shopify.com/s/files/1/0433/4085/7494/files/69497055855.pdf
    • https://cdn.shopify.com/s/files/1/0429/2883/2675/files/bogoroditse_devo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3214/0186/files/sijinikosu.pdf
    • https://cdn.shopify.com/s/files/1/0439/2576/6312/files/4728770817.pdf
    • https://cdn.shopify.com/s/files/1/0440/5320/1046/files/vubokelun.pdf
    • https://cdn.shopify.com/s/files/1/0428/7699/3702/files/fitbit_charge_2_instructions.pdf
    • https://cdn.shopify.com/s/files/1/0434/8998/4674/files/mujekogedidobelif.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1832/files/jaluxifixororonanikige.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30740110423.pdf
    • https://cdn.shopify.com/s/files/1/0438/4453/4429/files/ansiedad_en_los_nios.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/4440821509.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3156/files/recharge_card_printing_business_plan.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_off00007ad3.bin
4fd4d95dbaa63e1d8978b805d04ca688f6ca4604f22631a31c6eab72c4dc28ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD3 5496 bytes
font_01_sfnt_off00008d7c.bin
ad275823b5c28795b94ba35ee561b5d0b6bdfd2d926f65fac444dc2b0f0638c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 10088 bytes

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