Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f60e433dd347b73…

MALICIOUS

PDF

80.6 KB Created: 2020-08-08 04:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2e4926c6e1b64b491dc6b43aecf4d0a2 SHA-1: ca8af41b1f8e9d6e8323df48c6d135afdf486381 SHA-256: 0f60e433dd347b73c5575f2aee1dd4385555aa5351a056cc9b9a6cbc7e5978f9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a large number of external PDF links, suggesting a link farm designed to attract traffic or distribute content. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed for malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=isaiah+berlin+pdf+books
    • http://files.madronacompany.com/uploads/1/3/2/3/132302871/gafuninek.pdf
    • http://files.cramericonstruction.com/uploads/1/3/0/7/130739363/duzatiwonofivawov.pdf
    • http://files.primecleaningsystems.com/uploads/1/3/1/4/131437873/jesisebuvekegi.pdf
    • http://files.bayfieldcoheritagedays.org/uploads/1/3/2/7/132740951/wurubipup.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/91558624146.pdf
    • https://cdn.shopify.com/s/files/1/0431/7904/9121/files/jubegakadovup.pdf
    • https://cdn.shopify.com/s/files/1/0435/3484/4059/files/multivariable_calculus_mccallum_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/2521/1296/files/gta_4_cheats_ps3_super_jump.pdf
    • https://cdn.shopify.com/s/files/1/0433/9453/1493/files/fopetagawejor.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/vemubojikokasulogewefoz.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6537/files/wewevesajujazijubepadujud.pdf
    • https://cdn.shopify.com/s/files/1/0433/9613/7111/files/chuck_mangione_feels_so_good.pdf
    • https://cdn.shopify.com/s/files/1/0431/6738/3713/files/metal_carbonyl_compounds.pdf
    • https://cdn.shopify.com/s/files/1/0435/6397/4805/files/33662623211.pdf
    • https://cdn.shopify.com/s/files/1/0428/9832/5663/files/menopa.pdf
    • https://cdn.shopify.com/s/files/1/0433/7437/9173/files/51305334704.pdf
    • https://cdn.shopify.com/s/files/1/0432/8180/9558/files/tijupizefiviven.pdf
    • https://cdn.shopify.com/s/files/1/0436/0224/7838/files/67953746991.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f542.bin
dc403451d7db82534a6d963d4d92613fd3f39373103d64b21d5a7176a33f9cfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF542 5272 bytes
font_01_sfnt_off00010719.bin
289308109c626c470f2023fd7b43e733a10500e99068252a1f059215c7391e97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10719 15148 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.