Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e7de768e146aca…

MALICIOUS

PDF

58.6 KB Created: 2020-09-17 20:30:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 046198e3496691f4692e85e0a877dc22 SHA-1: c39fe1d81d702c76f4321443e10b3332ddf96493 SHA-256: 80e7de768e146acaf83e1e3c16658904455fb3e6fbce3fdf351ff0d320536dbd
150 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external PDF links, suggesting a link farm or SEO manipulation tactic. The ML classifier also strongly flagged this PDF as malicious. The primary intent appears to be redirecting users to potentially harmful content or engaging in SEO abuse.

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.ru/wix?keyword=golf+clash+wind+guide+tommy
    • http://files.soltiling.com/uploads/1/3/2/6/132681409/dixafusodemes-norudakideragi-nuzamewunazil-sojipogimuw.pdf
    • http://files.animalvetfairfield.com/uploads/1/3/0/8/130874518/xorim.pdf
    • http://savame.kikiadami.com/uploads/1/3/0/7/130776257/2992065.pdf
    • http://files.htcatholicschoolmyrtlebeach.com/uploads/1/3/1/4/131437119/69fadc11.pdf
    • http://zonanado.bobbenderdesign.com/uploads/1/3/0/7/130776677/2764270.pdf
    • http://sujef.cmcpressurewashers.com/uploads/1/3/1/4/131408024/vimoxedekajitekujase.pdf
    • http://wofijobu.confinedspaceandciviltraining.com.au/uploads/1/3/0/7/130775310/782dcd688e.pdf
    • http://nupewemef.jacksonchapelumc.org/uploads/1/3/2/6/132681513/rudirekawupajivemeti.pdf
    • https://cdn.shopify.com/s/files/1/0434/2536/6165/files/symbolic_interactionism_sociology.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0401/files/vomiting_in_infants.pdf
    • https://cdn.shopify.com/s/files/1/0432/4763/2548/files/anatomy_of_falciform_ligament_of_the_liver.pdf
    • https://cdn.shopify.com/s/files/1/0431/3956/3686/files/munipizovazof.pdf
    • https://cdn.shopify.com/s/files/1/0435/0119/1328/files/res._redirect_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0431/7780/3931/files/bivoli.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0395/files/fijiwafutimi.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007bde.bin
b57ca6e39b0c897f3eee2cb00b113342cb59cae079a363f2c83b84b799368399
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BDE 5564 bytes
font_01_sfnt_off00008ebf.bin
b31565e30b3099276f177b1d13604cc7c0cc39bc2b0b28de5f531cfe0dd697f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBF 7088 bytes
font_02_sfnt_off0000a2ff.bin
e00c09ff84aa63c7fa9b5b4effcbf1d72df0e253d8ea22f61ae31c2c704ff6d7
pdf-font-stream PDF embedded font (sfnt) at offset 0xA2FF 10620 bytes
font_03_sfnt_off0000c76a.bin
f84adfb139fdf49e27485feb0fb92b79055cb8d51cff817362774f5b6e7cd2b5
pdf-font-stream PDF embedded font (sfnt) at offset 0xC76A 16344 bytes