Malicious PDF — malware analysis report

Static analysis result for SHA-256 db363f8abfbe0e9a…

MALICIOUS

PDF

80.1 KB Created: 2021-03-21 03:21:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ccb368913ff39560613e8203e2f6b701 SHA-1: b68e210b378bf8e4080ef0485e813ae81811fabd SHA-256: db363f8abfbe0e9aa73661e5e677b7841cfad0f02dbc876fca00a6401d637936
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware distribution. The embedded URLs suggest an attempt to lead the user to a compromised or malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://botokaw.ru/wix?keyword=8th+grade+science+astronomy+test
    • https://cdn-cms.f-static.net/uploads/4443819/normal_6010fff74f40a.pdf
    • https://cdn-cms.f-static.net/uploads/4415519/normal_5fdbe8df86456.pdf
    • https://cdn-cms.f-static.net/uploads/4375207/normal_6045138c7e6d9.pdf
    • https://static.s123-cdn-static.com/uploads/4483837/normal_6008d2261a3b8.pdf
    • https://cdn-cms.f-static.net/uploads/4450248/normal_6047ae13325c8.pdf
    • https://static.s123-cdn-static.com/uploads/4464869/normal_6002ad9478e6b.pdf
    • http://fesavuxofogegil.iblogger.org/taco_bell_creamy_jalapeno_sauce_review.pdf
    • http://jewuzalozegeso.iblogger.org/nepuxovimagebakujepesa.pdf
    • http://dorodirebupekel.iblogger.org/dufewip.pdf
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/digutaxirubip.pdf
    • https://cdn-cms.f-static.net/uploads/4473035/normal_6012522e74cbf.pdf
    • https://static.s123-cdn-static.com/uploads/4476273/normal_5ff472645125d.pdf
    • https://tigamapelexoka.weebly.com/uploads/1/3/4/6/134633170/6d6c498.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nifibomagogov.rf.gd/bogawodovawunalewukunupoj.pdf
    • https://s3.amazonaws.com/tapexiw/vixaji.pdf
    • http://rofivotika.rf.gd/bailey_and_love_general_surgery.pdf
    • http://xoxitazowakovit.rf.gd/68299852495.pdf
    • http://dusetelonuzaj.epizy.com/anymore_ella_mai.pdf
    • http://pawegafed.rf.gd/zagokizin.pdf
    • https://s3.amazonaws.com/kaxukok/how_to_write_a_critical_review_of_a_research_paper.pdf
    • http://sulalanetoki.epizy.com/easy_bake_oven_recipe_book.pdf
    • http://farejuluwi.epizy.com/53225874864.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f928.bin
6206b3be9f67da0a003069856aff83a6c8975895329d93c35d43bdd9fbdf4841		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF928 5520 bytes
font_01_sfnt_off00010bc8.bin
903589c69ff2cf4a8c1403ed96cefbb28d6e73d0170610739cc6ef2b57e26ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10BC8 11488 bytes

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