Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4044e652e9e6106…

MALICIOUS

PDF

44.2 KB Created: 2020-08-03 17:24:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0e90210b303d6a016321f45184866cb SHA-1: 09634ebf752f07409c024e903cccb8585292d662 SHA-256: f4044e652e9e6106f055f5a525349c9b2c07415cb58b7d9c1a5f49e7e4f499b2
130 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a phishing or malware distribution attempt. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK directly points to the malicious URL, and PDF_SEO_LINK_FARM shows a large number of outbound links, typical of SEO poisoning or link farm abuse. The document body, though heavily obfuscated, contains the text 'Test de raven infantil pdf' and the malicious URL, reinforcing the lure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.com/pify?keyword=test+de+raven+infantil+pdf
    • http://files.atouchofwanderlustphotography.com/uploads/1/3/1/4/131408798/nanadukiver.pdf
    • http://files.endoftherainbowdaycare.com/uploads/1/3/0/7/130776487/nogenepegitesam_lafijejen_lekudix_rutogozibake.pdf
    • http://funatote.loseitwithliz.com/uploads/1/3/1/8/131871745/d255b1b3.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/43331691568.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/76509769691.pdf
    • https://cdn.shopify.com/s/files/1/0437/7798/2626/files/kamidukogevi.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6843/files/90340377573.pdf
    • https://cdn.shopify.com/s/files/1/0440/4169/9478/files/rejaguxonobake.pdf
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/raromedi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7879/files/92400512528.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/pugewopuwid.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3573/files/wamerokubinewi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3521/3479/files/nozadobelalolifere.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_off0000623d.bin
2ce35a42fd189854d8a819d03a419f750feba7f88231e73ea060e012916bdca9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x623D 5044 bytes
font_01_sfnt_off0000737b.bin
bbae28459e83b649093bb6139b62b90dc98142091d026ee736cb69fcc796d732		 pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 16000 bytes

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