Malicious PDF — malware analysis report

Static analysis result for SHA-256 df966b9c85e8268b…

MALICIOUS

PDF

71.6 KB Created: 2021-03-10 15:14:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 27478761dcabfe1f744bb4e04379195b SHA-1: 58f371c586a01973a6a752afe20007da37a1ed01 SHA-256: df966b9c85e8268b148fd90da1643f08c9bb13ec03f1c860825f31826c959da8
134 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many hosted on disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though heavily obfuscated, suggests a lure related to 'job opportunities', aiming to trick users into clicking malicious links. The presence of embedded URLs and the link farm heuristic strongly indicate an attempt to redirect users to malicious sites for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/123?utm_term=tema+pekerjaan+beruniform+prasekolah PDF link annotation
    • http://natgood.space/why_wont_my_xbox_turn_on_even_though_its_plugged_ingilxj.pdfIn PDF document text
    • https://binapesod.weebly.com/uploads/1/3/1/4/131438069/dubiwuga-devafifameviler-sumabosukaboro.pdfIn PDF document text
    • http://dektesheff.xyz/fovivobaxalozejoxad671fv.pdfIn PDF document text
    • https://xekozetona.weebly.com/uploads/1/3/4/5/134508060/nedojagovujo_gukuzisipedur.pdfIn PDF document text
    • https://wufunuxiropid.weebly.com/uploads/1/3/2/7/132712508/43b7522.pdfIn PDF document text
    • https://benokonafininu.weebly.com/uploads/1/3/4/6/134606635/tupulizex.pdfIn PDF document text
    • https://timakopazasiri.weebly.com/uploads/1/3/4/4/134445807/8429604.pdfIn PDF document text
    • https://pizazolumugi.weebly.com/uploads/1/3/4/0/134016987/jolom.pdfIn PDF document text
    • http://yatvoyya.fun/jarenosada93w1b.pdfIn PDF document text
    • http://bumalutaf.iblogger.org/how_to_fix_a_dymo_letratag.pdfIn PDF document text
    • http://workmonster.net/68597855257m5k9g.pdfIn PDF document text
    • http://smilex.club/les_coordonnes_sphriques_et_cylindriquesed1i5.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/4430516.pdfIn PDF document text
    • http://balifruit.com/murray_mower_deck_bearing_replacementp95q0.pdfIn PDF document text
    • http://detonicinitalia.website/nepazakojotuwexub9ko2v.pdfIn PDF document text
    • https://xomepuwosabagef.weebly.com/uploads/1/3/0/9/130969083/pogovogekuje.pdfIn PDF document text
    • http://unonatur.space/badag57icd.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/kudufigunabi/rizimovetulatevexesoneri.pdfIn PDF document text
    • http://resopuz.epizy.com/bitobixutobagulikeleja.pdfIn PDF document text
    • http://faxipobusevive.rf.gd/pretty_little_liars_books_series_3_episode.pdfIn PDF document text
    • http://ratazudawi.epizy.com/muduvafugagawubakuz.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/aspen_hysys_7._3_free.pdfIn PDF document text
    • http://xewofikedufika.epizy.com/kefasodif.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_off0000d829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD829 5368 bytes
SHA-256: 0a0ebddb64f8c0e096f7d2fe714732d7dc435ab4ddd810930ae756c98cd3954c
font_01_sfnt_off0000ea3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3A 10824 bytes
SHA-256: afe43aa092030f21defb7aefbbe2552185eda96466d652dd0b32f568b288e584

Open this report in the interactive analyzer, or submit your own file for analysis.