Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c0f9fb2a231b40…

MALICIOUS

PDF

43.2 KB Created: 2020-10-18 04:38:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb003ff303bcee432e6064acad742690 SHA-1: 1f6172a60f9228fe876ca586106d5dc040f79a32 SHA-256: 34c0f9fb2a231b40a59cb0a01554b58cf40d978a2282991f5a7b0f95273f85c8
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'best online grocery app android' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a PDF malicious redirector link and a high ML score strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.club/123?keyword=best+online+grocery+app+android
    • https://givifajilodox.weebly.com/uploads/1/3/0/8/130874655/c5c208f337c.pdf
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/8991696.pdf
    • https://zukamukenipebo.weebly.com/uploads/1/3/1/3/131380388/2672089.pdf
    • https://sesuwulot.weebly.com/uploads/1/3/1/4/131438847/xazukaxodizowuwas.pdf
    • https://vedabigejiko.weebly.com/uploads/1/3/1/4/131438046/7757125.pdf
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5f8b77abb6495.pdf
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f8738d98f38b.pdf
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/cd3619fef1.pdf
    • https://tanifovekula.weebly.com/uploads/1/3/1/3/131379991/bogigutamonuga-fewezegede.pdf
    • https://cdn.shopify.com/s/files/1/0497/9399/0818/files/gta_v_dns_codes_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/8555/4073/files/cooking_guide_wow_classic.pdf
    • https://cdn.shopify.com/s/files/1/0484/6629/6986/files/symphony_of_the_night_100_guide.pdf
    • https://cdn.shopify.com/s/files/1/0500/6881/6063/files/5462778318.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069fd.bin
f494dd22a8069ea2ee7851978abcd270ecea5e8e1b5b2328e40510b2b7ff8031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69FD 5392 bytes
font_01_sfnt_off00007c62.bin
13a90d35ac72ac34000c57077ab1280365f3841b955f36a0149b475de59d7afa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C62 10452 bytes

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