Malicious PDF — malware analysis report

Static analysis result for SHA-256 95d7c15f84221b32…

MALICIOUS

PDF

73.4 KB Created: 2021-04-30 08:06:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a96ce2fe76fdd411d566f547df5e91c SHA-1: 9a3399eb1e5cc54e2a00a43cae36285b039d89fb SHA-256: 95d7c15f84221b3241e1cb31a358e79fe88f0107c3ee67ee827aa4f8c35217fc
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a large number of external links, many pointing to PDF files, suggesting a link farm or SEO spamming operation. The embedded URLs likely serve as lures to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/strik?utm_term=the+count+of+monte+cristo+character+quotes
    • https://rigagebefizo.weebly.com/uploads/1/3/4/6/134631069/gajugipex_wumetawidoxaki_kuliwakipokexaz_jadolomewopiv.pdf
    • https://cdn-cms.f-static.net/uploads/4387808/normal_60302ed79f876.pdf
    • https://cdn-cms.f-static.net/uploads/4384460/normal_606788168e5a5.pdf
    • https://cdn-cms.f-static.net/uploads/4404488/normal_6028944d1ecc7.pdf
    • https://cdn-cms.f-static.net/uploads/4418985/normal_6023151f1eb71.pdf
    • https://makezuxakoje.weebly.com/uploads/1/3/0/7/130739015/dikebopa-fatuzezopiwo.pdf
    • https://cdn-cms.f-static.net/uploads/4388280/normal_603d3825aab80.pdf
    • https://static.s123-cdn-static.com/uploads/4448718/normal_5fed255413f67.pdf
    • https://cdn-cms.f-static.net/uploads/4424683/normal_6019048747fa6.pdf
    • http://jibiduseg.22web.org/xoraxuxesokidamamupipub.pdf
    • https://wanomumopanud.weebly.com/uploads/1/3/1/3/131379193/9898065.pdf
    • https://sanepawoja.weebly.com/uploads/1/3/4/5/134579143/5ff79c93.pdf
    • https://cdn-cms.f-static.net/uploads/4391649/normal_6057f0d0e03f6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mulerux/what_is_fine_dining_etiquette.pdf
    • http://mavugivedib.rf.gd/blender_2._79_manual_espaol.pdf
    • https://uploads.strikinglycdn.com/files/484da748-7ea8-4473-8d56-7a34c04ae27f/resnick_and_halliday_physics_book.pdf
    • https://s3.amazonaws.com/feliso/speak_book_review_essay.pdf
    • https://uploads.strikinglycdn.com/files/cafa069c-a8ab-4c96-ae4c-d7d400d6a65d/bronze_age_mindset.pdf
    • http://dubixifixi.epizy.com/a_monster_calls_espaol.pdf
    • http://wexalaz.epizy.com/laturarokirupavafetorodu.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_off0000e24c.bin
c69d3d56a4e3217c705f688d7810ee9732bc90faccf8e60bf59bd535c29b4bd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE24C 5164 bytes
font_01_sfnt_off0000f3b6.bin
c78b469450c59bb3837ba5649353ca1766d9a631124761d48b320a6c62fc42a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B6 10984 bytes

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