Malicious PDF — malware analysis report

Static analysis result for SHA-256 8904fddb21893d58…

MALICIOUS

PDF

73.6 KB Created: 2020-08-07 17:46:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e6644da277959a3baee7d73210f71411 SHA-1: a4ce91d7ea285fb0edf9ce416446d66dd762e0e2 SHA-256: 8904fddb21893d5884e3b58bd09adbcdef7b2dfa25ed38116c38bcfad481bf45
130 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link and a large number of external links, suggesting a link farm or SEO poisoning tactic. The presence of a 'download button' lure further supports a phishing or scam attempt. The document body, though heavily obfuscated, contains the malicious URL, indicating an attempt to disguise the true destination. No scripts were extracted, limiting the analysis of direct execution capabilities.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=liberation+theology+books+pdf
    • http://files.mollygazay.com/uploads/1/3/1/3/131379246/4d04b6f04.pdf
    • http://files.cngwritersinkcom.com/uploads/1/3/1/3/131381555/saxidupi.pdf
    • http://files.nhappyandbeautiful.store/uploads/1/3/0/7/130740249/mototoxatewa-fagekivekaxada-xufamomu.pdf
    • http://files.pinkbehindthethinblueline.org/uploads/1/3/1/8/131860787/7986818.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/comparing_fractions_decimals_and_percents_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/2191/0687/files/64617749837.pdf
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/wuvikonikimidib.pdf
    • https://cdn.shopify.com/s/files/1/0428/2132/0870/files/dafapoduzifeliwakuvu.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/9566675089.pdf
    • https://cdn.shopify.com/s/files/1/0436/0319/8114/files/vilibel.pdf
    • https://cdn.shopify.com/s/files/1/0440/7987/4213/files/74280716886.pdf
    • https://cdn.shopify.com/s/files/1/0437/2060/5848/files/25858808057.pdf
    • https://cdn.shopify.com/s/files/1/0430/4555/2290/files/diniladimazaraxosi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34597476450.pdf
    • https://cdn.shopify.com/s/files/1/0432/8708/5222/files/body_systems_and_functions.pdf
    • https://cdn.shopify.com/s/files/1/0430/5358/0439/files/filovufojev.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/
    • https://cdn.shopify.com/s/files/1/0432/2839/7727/files/comparing_fractions_decimals_and_percents_worksheets.pd

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000094be.bin
eac341e4b3a172a18746409423c9ccfc1026cf87beb8058866d57034fc86af1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94BE 17224 bytes
font_01_sfnt_off0000cb70.bin
48cb308bfa6c9e7078f95a6d62622092f8c31f611af541b11518a1d2cc5a300d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB70 5552 bytes
font_02_sfnt_off0000de53.bin
6c01d264ffec1896046ac58cb3f64b71e96adb1b92485094b3b746b5399b5e6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE53 10900 bytes
font_03_sfnt_off000103c3.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103C3 16092 bytes

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