Malicious PDF — malware analysis report

Static analysis result for SHA-256 60292b7666ef1f9b…

MALICIOUS

PDF

79.3 KB Created: 2021-04-03 03:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0109b2a84193a381a3f33c6f31f4dc83 SHA-1: d227e2455505b53741703ac2041088240c6f465d SHA-256: 60292b7666ef1f9b607e03021ec7028522b776460e054a794b600ee3bdaa29e0
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as a link farm containing numerous external links, many hosted on disposable domains. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing or trojan variant. While no scripts were explicitly extracted, the PDF structure and extensive URL list suggest an attempt to redirect users to malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/123?utm_term=redux+form+dispatch+focus PDF link annotation
    • https://cdn.sqhk.co/dezuvosowato/AjgPpij/59894077961.pdfIn PDF document text
    • https://cdn.sqhk.co/vonezositixi/aiiw9og/maxi_pencil_skirts_for_work.pdfIn PDF document text
    • http://kudretbozaci.com/jax_jungle_guide_8._240t956.pdfIn PDF document text
    • http://jubemexor.22web.org/what_is_the_bright_star_tonight_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/biwizalibe/hdVAFW3/lipoxajozepigagevux.pdfIn PDF document text
    • http://stankoff.org/how_do_you_reset_a_bryant_furnace49ahx.pdfIn PDF document text
    • http://soul-felt.com/free_website_templates_expression_web_49n6hi.pdfIn PDF document text
    • https://cdn.sqhk.co/gevanadu/92icj4Z/parsec_inc_commerce_ca_90040.pdfIn PDF document text
    • http://jumofusifabezol.66ghz.com/pofoboxawowajukej.pdfIn PDF document text
    • https://cdn.sqhk.co/buvaboda/ijsFgcR/imdb_bollywood_movies_list_2019.pdfIn PDF document text
    • http://hargotel.xyz/143100172199eyly.pdfIn PDF document text
    • http://sarhello.online/how_do_i_know_if_my_child_needs_to_see_a_psychologist25m4w.pdfIn PDF document text
    • http://giftcard-sale.store/bamekukixemed8yahr.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/jdeIjaj/tafuf.pdfIn PDF document text
    • http://good-production16.site/piano_man_lyrics_brandy_norwoodptg2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nibedob.rf.gd/craftsman_lt2000_mower_deck_belt_diagram.pdfIn PDF document text
    • http://sakolatokavataf.epizy.com/jamigovezapomen.pdfIn PDF document text
    • http://guwitus.epizy.com/94649012592.pdfIn PDF document text
    • https://917ed8d3-8a9f-4c5c-a3ad-554e533308ad.filesusr.com/ugd/a4e402_8c09a31ffa5347cbb149ba0022f0b2ea.pdf?index=trueIn PDF document text
    • https://8e75e8be-0f37-480b-85ac-641553c1acf9.filesusr.com/ugd/a4a1ce_542743e2c2c4451b8eda49194dd51f9d.pdf?index=trueIn PDF document text
    • https://1347de4c-4e54-429a-b84c-372e60bc5a2b.filesusr.com/ugd/6c98bc_b1ed9d7d11934f18b878a37b3fe183f7.pdf?index=trueIn 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_off0000e86f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE86F 5440 bytes
SHA-256: b07c484f61ef7c5a73d0213b9496c74c01f8102fb0d38cd5f8bbee0d676c92f2
font_01_sfnt_off0000facf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFACF 16348 bytes
SHA-256: 74dfc057241834ee8dc29593d22b621f910943d840563b4c59026d3bd9aa170c

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