Malicious PDF — malware analysis report

Static analysis result for SHA-256 2eb7eebea80b14bd…

MALICIOUS

PDF

40.3 KB Created: 2020-09-17 18:48:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d26c8f6a0d076e6d330dc97aac831e9c SHA-1: b79b04e5bfca6d3ea1e732d13fb47be6f73dfe14 SHA-256: 2eb7eebea80b14bd8f69c44895d7b5065e97a8da091ca86be33f2e7f6024a382
152 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to link farms. One prominent link redirects to a malicious domain, suggesting a phishing or malware distribution attempt. The document body text is obfuscated and contains the same redirect URL, reinforcing the malicious intent.

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.club/wix?keyword=driving+directions+to+st+augustine+florida
    • http://files.endlesslygrateful.com/uploads/1/3/1/3/131384462/03409ba85718e55.pdf
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdf
    • http://files.emteacher.com/uploads/1/3/1/4/131411199/vugomokaxe.pdf
    • http://files.democracyalert.ca/uploads/1/3/2/6/132682335/789568.pdf
    • http://files.melliferous.org/uploads/1/3/0/8/130814535/8146919.pdf
    • http://files.servingafrica.org/uploads/1/3/1/4/131453990/2e6fcb5277806b.pdf
    • http://fasajakub.greyallison.com/uploads/1/3/0/7/130739141/vadekariguteluw.pdf
    • http://files.sekulas.com/uploads/1/3/1/0/131070488/medomisutotup_dabaxalifositun_fudek.pdf
    • http://nilix.rijkenspark.com/uploads/1/3/0/7/130776349/nakovebigeg.pdf
    • http://files.susanjzall.com/uploads/1/3/1/0/131070792/87e9f67d446.pdf
    • http://files.9thmediumregimentra.com/uploads/1/3/1/6/131606630/bijulirin.pdf
    • http://nuwuwilex.aprilallysonabel.com/uploads/1/3/1/3/131384600/8304377.pdf
    • http://files.dianazasadny.net/uploads/1/3/1/0/131070294/7b049cc.pdf
    • https://143ae73a-0e4e-479b-848d-69a928d095f8.filesusr.com/ugd/aef5b7_78ce7829a16047fd97e589b16c263d34.pdf?index=true
    • https://1ccb176c-b9d8-45a9-b6aa-cb6194e9b82a.filesusr.com/ugd/162fe6_5a043f3d88b9451cab4e57aa8dd5be8e.pdf?index=true
    • https://a11b32dc-fa95-4f6f-b9c2-06aa4d73f37b.filesusr.com/ugd/a13bc2_c34d0f750379415a97c9820924a23c3a.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f39.bin
9ba90c3b7e8cc206d5427db1f98bf4d1a3ed3a0f6ce05d6da7c7914a0f64a15f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F39 5248 bytes
font_01_sfnt_off00007137.bin
cd30fff69b4d679f909d00fc05125a1260d836f931b0f97ac7227f356e807c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7137 10104 bytes

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