Malicious PDF — malware analysis report

Static analysis result for SHA-256 d772cb1caf9f289f…

MALICIOUS

PDF

73.0 KB Created: 2021-02-27 18:05:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2b588d095b037e334e3b6995732c1337 SHA-1: 6515bba6fc06ce210205878c9401a63c5c332096 SHA-256: d772cb1caf9f289f9566f3579da5e4cf9bbef0b14548cb167e06e4a9ff049371
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://resalured.ru/wix?keyword=resident+evil+4+mod+apk+2020 PDF link annotation
    • http://kiwenalod.medianewsonline.com/noco_genius_gb40_wont_charge.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/31559492100.pdfIn PDF document text
    • https://rujijixagav.weebly.com/uploads/1/3/1/3/131383475/kilelut-gimeped-fulimi-bemifozim.pdfIn PDF document text
    • https://xotizirew.weebly.com/uploads/1/3/1/8/131855992/bipisifo-lumin-sadobasuwevebog.pdfIn PDF document text
    • http://turekawetareju.iblogger.org/56001345438.pdfIn PDF document text
    • https://duxobibalarig.weebly.com/uploads/1/3/4/3/134360367/ca6f71698c5287.pdfIn PDF document text
    • http://malanefire.sportsontheweb.net/xomepekatakajotefo.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/10171500028.pdfIn PDF document text
    • https://zokevuwokonumez.weebly.com/uploads/1/3/4/6/134682223/5331848.pdfIn PDF document text
    • http://jiwapadenejeza.getenjoyment.net/53140033034.pdfIn PDF document text
    • https://nudezodubazez.weebly.com/uploads/1/3/1/1/131164524/xujabaket-xuroxod-jobutegeko-jugiwezi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zonivezada/ziguniweboparozexawifizef.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/orange_crepe_paper_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/mavifamutonirivunit.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/36932817159.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/ff14_fishing_guide_stormblood.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/51258982274.pdfIn PDF document text
    • http://joxumokuri.epizy.com/33015628728.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1BE 5500 bytes
SHA-256: 32589380b544fa5b98a83b28d5acf6e74f07d3e2e9659dc1e0b6ef3bc306eadb
font_01_sfnt_off0000f472.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF472 10004 bytes
SHA-256: bab3f2367f7d4cbd85848555c3da910402c04868e3db5745abd7fd08434d8b8a

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