Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac3f941631e17050…

MALICIOUS

PDF

37.3 KB Created: 2020-06-04 01:40:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 5728fd7d0415b3696c85ff25f39f5a8d SHA-1: 1b58c4b468edaa1c88dc360d8f3b192a39ce4c25 SHA-256: ac3f941631e170507db48fbafe974cf762e81bff8a33e57ee0b86b9b99f007ca
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files, indicating a link farm or SEO abuse tactic. The document body contains text related to a movie title, likely a lure to attract clicks. The primary heuristic identified a link farm with 27 external PDF links, predominantly hosted on 'normanpointe1.com'. The embedded URLs are likely intended to redirect users to malicious content or further phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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 http://marythumma.com/uploads/1/3/0/3/130313436/130313436.html#arjun+reddy+telugu+movie+hd+full PDF link annotation
    • http://normanpointe1.com/uploads/1/3/0/5/130539944/71e7e.pdfIn PDF document text
    • http://lineakornumrask.com/uploads/1/3/0/9/130969838/kebuguranow-naset-wuzuwup-duxetejo.pdfIn PDF document text
    • http://fionwineroom.com/uploads/1/3/0/5/130588997/1320687.pdfIn PDF document text
    • http://hostmaster.damm-zahntechnik.de/uploads/1/3/0/6/130621969/raforike-xebosawifixugeg-liguzazojot-litikur.pdfIn PDF document text
    • http://younggunns.com/uploads/1/3/1/4/131407253/2dbb38f2c9be4e2.pdfIn PDF document text
    • http://theyogipanda.com/uploads/1/3/0/3/130323571/tonimomebow.pdfIn PDF document text
    • http://3ie.undesirable.us/uploads/1/3/0/7/130775821/3418498.pdfIn PDF document text
    • http://citizensarmory.net/uploads/1/3/0/2/130272260/gijolibokalilewel.pdfIn PDF document text
    • http://mtzionbcclaremore.org/uploads/1/3/0/5/130551445/biwos-piwaxu-mulawalifisa-melevajuzigi.pdfIn PDF document text
    • http://fivestarautodetail.net/uploads/1/3/1/3/131381607/ginodisonetim.pdfIn PDF document text
    • http://hookmo.com/uploads/1/3/0/8/130873776/sonubinumiti.pdfIn PDF document text
    • http://marythumma.com/uploads/1/3/0/3/130313436/terms.htmlIn PDF document text
    • http://marythumma.com/uploads/1/3/0/3/130313436/dmca.htmlIn PDF document text
    • http://marythumma.com/uploads/1/3/0/3/130313436/policy.htmlIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kowitiwut.files.wordpress.com/2020/06/81703259088.pdfIn PDF document text
    • https://tufegutoxa.files.wordpress.com/2020/06/62030203816.pdfIn PDF document text
    • https://zabefaku.files.wordpress.com/2020/06/gawidajejuxukuxepuwupo.pdfIn PDF document text
    • https://fubitudiwun.files.wordpress.com/2020/06/kifaniwomiv.pdfIn PDF document text
    • https://sodemigigov.files.wordpress.com/2020/06/bumobir.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006533.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6533 10808 bytes
SHA-256: 93c1c6e116b89cb66d92814ccb7cc619b11300bfad8ffe60263fd37f4b4e36fd

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