Malicious PDF — malware analysis report

Static analysis result for SHA-256 c36fcec512db47d8…

MALICIOUS

PDF

35.7 KB Created: 2020-08-22 22:11:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0f1296d356da2f59975b7579a1179657 SHA-1: c2d6a7a36b38bd8def43383b5ab7bb5653945662 SHA-256: c36fcec512db47d8baa4e06e8acd8da3355fe126efb00a1ae575d381ae8641b6
152 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, with numerous embedded URLs. One critical heuristic identified a link to a known malicious redirector, 'ttraff.cc', which likely serves as the initial stage for delivering further malicious content. The ML classifier also strongly indicated maliciousness. No scripts were extracted, limiting the ability to determine specific payload delivery mechanisms.

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=the+magician%2527+s+nephew+quiz+and+answers
    • http://nilopi.thelittlefarmthailand.com/uploads/1/3/0/9/130969341/kitanub.pdf
    • http://wejabuje.vpokerfriends.com/uploads/1/3/1/6/131636612/8025073.pdf
    • http://files.briancurtinbangkok.com/uploads/1/3/2/7/132710632/401a6d8ffcba.pdf
    • http://files.centrestagedanceacademy.com/uploads/1/3/1/6/131606368/9839902.pdf
    • http://sowap.justjanetministries.com/uploads/1/3/1/4/131437092/bawuxakodajajaselek.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/norebesumip.pdf
    • https://cdn.shopify.com/s/files/1/0437/0874/3835/files/e2_80_9chermitage_e2_80_9d.pdf
    • https://cdn.shopify.com/s/files/1/0432/9806/2491/files/fundamentals_of_power_electronics.pdf
    • https://cdn.shopify.com/s/files/1/0428/2328/6940/files/pewoxog.pdf
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/lupumomofegixatizi.pdf
    • https://cdn.shopify.com/s/files/1/0440/3478/5430/files/fapawijex.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9054/files/85867543075.pdf
    • https://cdn.shopify.com/s/files/1/0436/2603/7411/files/13874147253.pdf
    • https://cdn.shopify.com/s/files/1/0437/4750/8385/files/chess_app_android_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/7578/8184/files/vawiposutigebuvojegezal.pdf
    • https://cdn.shopify.com/s/files/1/0435/4405/1871/files/liwiwetoxojowetetisiwopur.pdf
    • https://cdn.shopify.com/s/files/1/0437/2417/7576/files/bosapulofuxalepap.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_off000049f1.bin
91f77c371a3694bee134511c48ea27a2a67613d7dee4321f55102d7e4c244466		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F1 5704 bytes
font_01_sfnt_off00005d47.bin
0c0e415afaa43de25278419a0fc01a676b8ba14e975b99d829c6870c9f7c0c9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D47 10924 bytes

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