Malicious PDF — malware analysis report

Static analysis result for SHA-256 d04e1affe3adcdf5…

MALICIOUS

PDF

66.7 KB Created: 2021-02-20 04:26:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bf21da42cfe0841e83662efc676463b4 SHA-1: 74d8793ff56be8c691567f26ff8f868a33e6eb91 SHA-256: d04e1affe3adcdf52199f42017275b641b5ba12444a3cd10f316348a379409a8
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://jacksth.ru/wix?keyword=affinity+designer+workbook+pdf+free+download PDF link annotation
    • http://xruhdfo.site/prepositional_phrase_quiz_with_answers8p9pp.pdfIn PDF document text
    • https://jifilebipik.weebly.com/uploads/1/3/4/3/134375607/93cdddb.pdfIn PDF document text
    • http://fisuruwibowin.66ghz.com/wamameri.pdfIn PDF document text
    • https://munejubulogulep.weebly.com/uploads/1/3/4/2/134266186/viraziwofevaj.pdfIn PDF document text
    • https://vuloninufe.weebly.com/uploads/1/3/4/0/134012437/2838400.pdfIn PDF document text
    • https://ninibukakogim.weebly.com/uploads/1/3/2/8/132815385/889648.pdfIn PDF document text
    • https://seruvexude.weebly.com/uploads/1/3/4/4/134404645/koxesejoxex.pdfIn PDF document text
    • http://famesodelazij.22web.org/wisconsin_child_care_forms_and_publications.pdfIn PDF document text
    • http://fusubakitakudup.66ghz.com/libro_el_secreto_ley_de_la_atraccion.pdfIn PDF document text
    • https://dopovebo.weebly.com/uploads/1/3/4/4/134431975/1334874.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/semuxemakaw/30947466062.pdfIn PDF document text
    • http://xerevim.epizy.com/zananamenusujarofapodir.pdfIn PDF document text
    • http://xufizup.rf.gd/51485528358.pdfIn PDF document text
    • http://fozinudar.rf.gd/closet_dimensions_guide_in_cm.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/6724453523.pdfIn PDF document text
    • https://s3.amazonaws.com/dinilederu/51527154179.pdfIn PDF document text
    • http://selewexa.rf.gd/dewugogezeraxopimu.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_off0000c7ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7CA 5596 bytes
SHA-256: b9d4665b93cdb0bd3a63270680828ee28b5ac7a564b96d197a0c793a6e10a79e
font_01_sfnt_off0000db09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB09 10028 bytes
SHA-256: cd416c68eb2f5858add7edd2aea09ff3b34d54543ea96d458c5626fab9605f34