Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb9ecd3f9e54cbde…

MALICIOUS

PDF

32.5 KB Created: 2020-10-06 16:00:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 382ce6258aafa94b3d4f416c09c511e8 SHA-1: d9e3d3a4ceb3f32acde8260a32593d4a40a9f305 SHA-256: bb9ecd3f9e54cbdeb8ec6850ceffab6373032a399b3aebe499a8325efac40452
152 Risk Score

Malware Insights

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

This PDF file contains numerous embedded links, many of which point to redirector infrastructure. The document body text, though garbled, includes keywords related to movie downloads, suggesting a lure to entice users to click on the malicious links. The primary malicious link identified is https://ggtraff.ru/strik?keyword=patiala+house+full+movie+download+mp, which is flagged as a 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://ggtraff.ru/strik?keyword=patiala+house+full+movie+download+mp
    • http://jaxerab.beheadstrong.org/uploads/1/3/1/6/131636908/f5d2b9618bcbe4b.pdf
    • http://files.cdri.org/uploads/1/3/0/7/130740461/vumekinigitifal-bonakorum-vufode-zilaz.pdf
    • http://files.highsandhellos.com/uploads/1/3/1/4/131438641/pivukitusijatizibu.pdf
    • http://files.electricslidinggates.co.uk/uploads/1/3/0/7/130775520/zimajokabufu-mejofafosenege-taxinebomaton-kojagijox.pdf
    • http://files.indianheadsheepandgoat.org/uploads/1/3/1/6/131637073/topowofabij.pdf
    • http://fubepeko.lrbarms.com/uploads/1/3/1/3/131379578/53f6df.pdf
    • http://diromi.scanacurriculum.com/uploads/1/3/1/3/131383510/4540790.pdf
    • http://files.strettonpc.com/uploads/1/3/0/7/130774962/5138961.pdf
    • https://cdn.shopify.com/s/files/1/0434/5295/6838/files/kelukitikuwapigokivo.pdf
    • https://cdn.shopify.com/s/files/1/0482/3711/7592/files/beautyrest_3.5_inch_geo-matt_foam_mattress_topper.pdf
    • https://cdn.shopify.com/s/files/1/0486/0575/7600/files/clear_your_clutter_with_feng_shui.pdf
    • https://cdn.shopify.com/s/files/1/0476/1478/7740/files/sajowejokuwusawuto.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_off0000420a.bin
5bd75e56a1b6a5bc5815def7381a3a61470e0b59068dff19caf79e9893e1c8b4
pdf-font-stream PDF embedded font (sfnt) at offset 0x420A 5340 bytes
font_01_sfnt_off00005427.bin
ab157f1152409e3740e8a10161dcf7f131f1712e863af1774f3e83a857fd939a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5427 9712 bytes