Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2357dce5b553ca6…

MALICIOUS

PDF

39.5 KB Created: 2020-08-25 00:57:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 888c8e9333dee1dd673dd2f40cf0071f SHA-1: 972853cc553ebc1ff2d177a54903a042fe324e2f SHA-256: f2357dce5b553ca6ece5ea3ff46bf4ffe3a53b9f84ac26027dddfb7a2e3d4248
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes text related to 'Command and conquer generals zero hour' and the malicious URL, suggesting a lure to download a game. The presence of numerous external PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. No scripts were extracted, limiting the analysis of further execution chains.

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=command+and+conquer+generals+zero+hour
    • http://sejulamut.elephantroomgallery.com/uploads/1/3/0/7/130739006/1af68493e57f.pdf
    • http://files.clevelandpropshop.com/uploads/1/3/0/7/130776401/2940218.pdf
    • http://files.armenianchurchofkuwait.com/uploads/1/3/0/8/130874246/bofowebop_viwov_bimoseve.pdf
    • https://cdn.shopify.com/s/files/1/0436/5916/5849/files/45448732990.pdf
    • https://cdn.shopify.com/s/files/1/0434/4066/8838/files/70248052432.pdf
    • https://cdn.shopify.com/s/files/1/0436/0945/6803/files/55132921284.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30072581460.pdf
    • https://cdn.shopify.com/s/files/1/0429/9148/5091/files/play_store_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0431/0709/0581/files/buyers_edge_platform_lake_worth_fl.pdf
    • https://cdn.shopify.com/s/files/1/0431/7629/6605/files/rapid_assessment_procedure.pdf
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/felif.pdf
    • https://cdn.shopify.com/s/files/1/0436/1725/5581/files/bijugogavilumo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1639/6697/files/nys_notary_public_practice_exam_2016.pdf
    • https://cdn.shopify.com/s/files/1/0432/0329/7438/files/kofikepiluxuramekojazisu.pdf
    • https://cdn.shopify.com/s/files/1/0429/3260/0985/files/toxujasafesot.pdf
    • https://cdn.shopify.com/s/files/1/0428/5657/9228/files/laterally_unsupported_beams.pdf
    • https://cdn.shopify.com/s/files/1/0432/2295/8248/files/s_mores_lab_limiting_reagent_answers.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_off00005169.bin
0e903b53417d2b5778083c124a651461655cd3a7de79e342981015efac5121ca
pdf-font-stream PDF embedded font (sfnt) at offset 0x5169 5436 bytes
font_01_sfnt_off000063a5.bin
df50ce1cc374fd50b78cb96a5179eaff01602e4fea483b3d3a841b267cc13a9f
pdf-font-stream PDF embedded font (sfnt) at offset 0x63A5 2132 bytes
font_02_sfnt_off00006cd6.bin
735f123d4c6564ea153968248244f20132c6bd83e7ffe0fc4d1158307e5cec80
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD6 10412 bytes