Malicious PDF — malware analysis report

Static analysis result for SHA-256 090a010beb1b732e…

MALICIOUS

PDF

40.2 KB Created: 2020-09-19 01:00:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abbbc06fa883632fdc58a29b57d506b5 SHA-1: 830739769e78567e28d7aa790b165a2582de4ce6 SHA-256: 090a010beb1b732e043998ad7e6abcb6700be4b5fe0c45060a4ac3c6eb1c9bf1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many of which are identified as part of a link farm and a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a specific product search, suggesting a phishing or scam attempt. The ML classifier strongly indicated maliciousness, and the presence of multiple suspicious URLs supports this assessment.

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.link/wix?keyword=whirlpool+dishwasher+quiet+partner+iii
    • http://zurepewut.keepingupwithk.com/uploads/1/3/0/8/130814416/6537422.pdf
    • http://wodamo.commoneraproductions.com/uploads/1/3/1/8/131857920/91b9e577b4cb5c.pdf
    • http://lelojaru.imancircusarts.com/uploads/1/3/2/6/132681218/pufimivepedusapam.pdf
    • http://xiwixijid.chrisrylander.com/uploads/1/3/2/7/132712615/ronegeki.pdf
    • http://pojexo.bosombuddiesbenefit.com/uploads/1/3/0/8/130813785/3787413.pdf
    • http://guditipo.theblabberingbrain.com/uploads/1/3/2/6/132681422/wisepi_widekazo_lemap.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b15572dc-a693-48ae-92b7-4548dde14524.filesusr.com/ugd/29c71c_1375f0ec32e64e6c80f342a95abc25ea.pdf?index=true
    • https://b8408730-8528-416c-94dd-e293e507c979.filesusr.com/ugd/38062a_0c10d180b49a449583b0012524607387.pdf?index=true
    • https://6f5d0a7c-d334-4b80-a9b5-2f312341c9ba.filesusr.com/ugd/724bd4_5f2964ad3c9f449abe78181a61556475.pdf?index=true
    • https://c01a54b6-173d-47dd-8cb1-4d8ec4d0b0f6.filesusr.com/ugd/115d6e_8b773c3ff6eb46508d11ab2e7d20eb72.pdf?index=true
    • https://60349cf0-8a25-46ee-b000-1b8746ef79d3.filesusr.com/ugd/3b47cb_9ea5946a868c437baffe6bf3c5f523ff.pdf?index=true
    • https://eebd8fde-d6c7-4e7c-a9d9-d991a43c3311.filesusr.com/ugd/97aff7_187c41b5165d4304b2df48387f4533a7.pdf?index=true
    • https://1c773b14-4ec1-4cd0-8057-08530bf7cc14.filesusr.com/ugd/724fb5_9c86152cbf2a4ea091c786cb29b0e296.pdf?index=true
    • https://f54792cb-bed7-4705-8b6b-1cdf07a10105.filesusr.com/ugd/de02f3_6f1bab96492743a88d71edcded99b7c7.pdf?index=true
    • https://78663d00-3045-498e-b0b4-cfef4608b352.filesusr.com/ugd/6846fe_56eaa1a5cb894a50b541893dc3edf6c2.pdf?index=true
    • https://002b6cd2-2f87-43c7-a6ac-2c647ac374fd.filesusr.com/ugd/93c935_67b5e26f44214660a18f7ba8adb53739.pdf?index=true
    • 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_off00005b77.bin
ddc1c2a02686cff902644e50e553625ba12e7c1f35a3aca29f13f98859bc66e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B77 5276 bytes
font_01_sfnt_off00006d74.bin
a754ef02030abafe8e589e0a7cab6dd6d94fef5ec79b5cd5ba9ca3f0566e54f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D74 10876 bytes

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