Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8249b43935e0f6c…

MALICIOUS

PDF

66.2 KB Created: 2021-02-24 06:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: fc5486861962c928ec93398f3b150571 SHA-1: e9bf3f2c00cf8fe6dd34ba15c3b9e742bbdfaf6b SHA-256: d8249b43935e0f6cf5cde4a5b173d4b0d89858485ea155db79d4a0f954342dbb
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=install+failed+invalid+apk+cydia+impactor PDF link annotation
    • https://xixivisowokote.weebly.com/uploads/1/3/2/8/132814838/2451730.pdfIn PDF document text
    • http://rovebagilin.22web.org/vunas.pdfIn PDF document text
    • https://gunajogozezulom.weebly.com/uploads/1/3/5/3/135385825/rinilimamafo-zojefaparur-sulojor.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476941/normal_5fd04398a7dbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375340/normal_5fdc3e7bb6674.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378856/normal_6024544e5ca84.pdfIn PDF document text
    • https://dexanefuv.weebly.com/uploads/1/3/1/3/131383512/liramatax-xaxegelo-roxirobotumobi-gigexu.pdfIn PDF document text
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/netenox_mewuzalabami_tukis_zotitaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383698/normal_5fc76880c47ce.pdfIn PDF document text
    • https://nobaloledajasom.weebly.com/uploads/1/3/2/6/132681012/tebotuka-mepigesadu-rilemuvu-dupazufaleb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://webakipi.epizy.com/lirik_lagu_charlie_puth_one_call_away_dan_artinya.pdfIn PDF document text
    • http://kepisuv.epizy.com/buvezarotamuvelexezizoji.pdfIn PDF document text
    • https://s3.amazonaws.com/xedewofuretujo/74414336014.pdfIn PDF document text
    • http://sexexunila.epizy.com/lowercase_alphabet_tracing_worksheets.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_off0000c2b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2B4 5464 bytes
SHA-256: 55c67132598f0f7a49ce493a2a1fccb04cc264ab07bb427f9bccb4915ff5a021
font_01_sfnt_off0000d54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD54C 11980 bytes
SHA-256: 185000ea790cce9d88b4293e5c6174352fa2c219ff42dbb91db43c33a76e0868