Malicious PDF — malware analysis report

Static analysis result for SHA-256 256cbbb59258c7e6…

MALICIOUS

PDF

55.7 KB Created: 2020-09-01 09:41:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43bcfc9cf921fdd14860c3510c742650 SHA-1: 9cc10e2e87df3e7968f6ef042ff4c23a788a56fe SHA-256: 256cbbb59258c7e6a7bd718f932f5a64ae5017658482c39f0548b24226daa82e
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=warframe+arbitration+excavation+guide'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, with the first identified as 'https://cdn.shopify.com/s/files/1/0439/1036/5339/files/attachments_rainbow_rowell_online.pdf'. The document body, though heavily corrupted, appears to contain text related to a 'Warframe arbitration excavation guide', suggesting a lure to entice users to click the malicious link.

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=warframe+arbitration+excavation+guide
    • https://cdn.shopify.com/s/files/1/0439/1036/5339/files/attachments_rainbow_rowell_online.pdf
    • https://cdn.shopify.com/s/files/1/0437/1103/7589/files/business_plan_growth_strategy_template.pdf
    • https://cdn.shopify.com/s/files/1/0428/3033/2070/files/18749084103.pdf
    • https://cdn.shopify.com/s/files/1/0434/2117/1879/files/python_website_template_github.pdf
    • https://cdn.shopify.com/s/files/1/0428/3210/1543/files/rojutawerafopekefotu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8992/0154/files/how_to_set_day_in_minecraft.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/77093278514.pdf
    • https://cdn.shopify.com/s/files/1/0436/4291/2926/files/anova_test_in_spss.pdf
    • https://cdn.shopify.com/s/files/1/0437/5989/4680/files/nutrisi_hidroponik_organik.pdf
    • https://cdn.shopify.com/s/files/1/0431/9812/0094/files/avast_antivirus_apk_mod.pdf
    • https://static.usrfiles.com/ugd/64f9d2_10a0262cb8aa405bb17ae169b52d52f9.pdf
    • https://static.usrfiles.com/ugd/756799_de9e6f6c99734468a877c2c226247bfe.pdf
    • https://cdn.shopify.com/s/files/1/0432/8616/7702/files/vulakegajeli.pdf
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/partes_internas_de_la_computadora_pa.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/juxowakuluvojidotokuli.pdf
    • https://cdn.shopify.com/s/files/1/0434/4971/2807/files/tajonajigumitozafoba.pdf
    • https://cdn.shopify.com/s/files/1/0459/8398/9922/files/vosaxewuvawofe.pdf
    • http://discord.gg/mpSpx8kKeep
    • 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_off00009b11.bin
e9bff657b7a1a39dbbfedd250fd1ddd948d989569c19fa735567e5b939db8944
pdf-font-stream PDF embedded font (sfnt) at offset 0x9B11 5412 bytes
font_01_sfnt_off0000ad7a.bin
cc19906e521adf0ae87435a9b28cd3265eacc3d9d9635e905051becf2ac37d13
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD7A 10624 bytes