Malicious PDF — malware analysis report

Static analysis result for SHA-256 48182a47263d83dc…

MALICIOUS

PDF

49.1 KB Created: 2020-08-22 09:15:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31f87576fb7b2fe47e1de342b14f80d7 SHA-1: 154f77289695c643b12e1cc151a0103b93a72065 SHA-256: 48182a47263d83dc507640c2ced033e9a0f580c499f2cc222d45d9913afca1a3
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a link farm hosted on Shopify, with a primary redirector link to 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to searching PDFs and references the malicious URL. The ML classifier strongly indicated maliciousness, and the PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the presence of a known malicious redirector.

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=how+to+word+search+a+scanned+pdf
    • http://files.herdiselmend.com/uploads/1/3/0/9/130969470/dovowadu.pdf
    • http://files.shopkaiapapaya.com/uploads/1/3/2/8/132814337/4953744.pdf
    • http://files.jacobsfooddiaries.com/uploads/1/3/2/7/132740275/juwofikego.pdf
    • http://files.villagestogetherhub.co.uk/uploads/1/3/1/3/131379510/326078.pdf
    • http://nizelaxem.garden-artworks.com/uploads/1/3/0/8/130874368/92b233b296e519.pdf
    • http://files.shopkaiap
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/62042090741.pdf
    • https://cdn.shopify.com/s/files/1/0431/9651/4461/files/e2_80_9cunfunded_liabilities._e2_80_9d.pdf
    • https://cdn.shopify.com/s/files/1/0461/9934/1205/files/dozunuromozo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5185/9616/files/78298224442.pdf
    • https://cdn.shopify.com/s/files/1/0436/9691/4600/files/fazisatejaxatodixawo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7108/6485/files/bosepololezesomowegaviw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4265/1816/files/30851805766.pdf
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/37044324624.pdf
    • https://cdn.shopify.com/s/files/1/0437/4413/3281/files/sezawuwiwe.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/additional_mathematics_pure_and_applied_talbert_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/4659/8816/files/vocabulaire_anglais_finance.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c68.bin
fd1c67c2e60dc6870f5ebb8186c4bff85cce84d0244030055929610e4379ab0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C68 5264 bytes
font_01_sfnt_off00007e5b.bin
14862306b8e1883e626200f8713ef9945d92f71ce4fa9c619033b16a00e06a8b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5B 10024 bytes
font_02_sfnt_off0000a0a5.bin
4972c892cf783310df7ebe7a43044f7b4e4d650808add06809858f2f0e6eeb09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA0A5 16448 bytes

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