Malicious PDF — malware analysis report

Static analysis result for SHA-256 74276fca387429ee…

MALICIOUS

PDF

75.4 KB Created: 2021-04-14 04:42:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c2cade83a0f21bc6f44cd34b33d987ea SHA-1: ce402bc08b71bb3aa05dbba0192d19b4d30b148c SHA-256: 74276fca387429ee9af9d6d6d355e46db65fbbc9e9c3bbcb72ec0502cff40702
126 Risk Score

Malware Insights

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

The PDF document contains numerous external URIs, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards an attempt to trick users into visiting a compromised website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • 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.
  • 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://fokemale.ru/strik?utm_term=honeywell+electronic+air+cleaner+manual PDF link annotation
    • http://netolenogafa.getenjoyment.net/thinking_in_react.pdfIn PDF document text
    • http://bazunujovi.scienceontheweb.net/wesal.pdfIn PDF document text
    • http://fakaripeti.xyz/codycross_answers_group_4_puzzle_4reohk.pdfIn PDF document text
    • http://qwonder.space/mazuginokaxusezidif5boeg.pdfIn PDF document text
    • http://helpcopyright-service.com/tommy_ds_wyndmoorqbzt0.pdfIn PDF document text
    • http://electorat.org/tai_chi_for_beginners_and_the_24_forms_dvd1evk1.pdfIn PDF document text
    • http://molapeda.iblogger.org/an_inspector_calls_sparknotes.pdfIn PDF document text
    • http://wamipivifubape.sportsontheweb.net/bowel_inflammatory_disease.pdfIn PDF document text
    • http://obmenkalnr.online/32643458929j1z6b.pdfIn PDF document text
    • http://defokozixeral.sportsontheweb.net/24427102095.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kudawugijamino.rf.gd/rariwemuga.pdfIn PDF document text
    • http://rosunugi.epizy.com/toyota_motor_annual_report_2018.pdfIn PDF document text
    • http://juwebud.epizy.com/granny_smith_apk_1._3._7.pdfIn PDF document text
    • http://lezenexujurab.epizy.com/arris_tm1602a_vs_tm1602g.pdfIn PDF document text
    • http://makekafes.epizy.com/tulesigasutazum.pdfIn PDF document text
    • http://xadokij.epizy.com/lixarazuliwak.pdfIn PDF document text
    • https://s3.amazonaws.com/bitajemisajoz/19539144921.pdfIn PDF document text
    • https://s3.amazonaws.com/dowavelaxam/devawok.pdfIn PDF document text
    • https://s3.amazonaws.com/sepawi/different_dosage_forms_of_diclofenac_sodium.pdfIn PDF document text
    • http://xowobovu.myartsonline.com/36013003704.pdfIn PDF document text
    • http://dajomilot.atwebpages.com/batman_killing_joke.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/jemeteru.pdfIn PDF document text
    • http://dunupilopun.epizy.com/76213034614.pdfIn PDF document text
    • http://tijopuzotozume.rf.gd/funikex.pdfIn PDF document text
    • http://mevediruzorapaz.rf.gd/donug.pdfIn PDF document text
    • http://tososite.onlinewebshop.net/45702638365.pdfIn PDF document text
    • http://gixarewujedel.atwebpages.com/7142555540.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/60816503064.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_off0000e6ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EA 4920 bytes
SHA-256: c804d46d59648f11ca08fb1da4a0b94afe0cd388cf808a6883e1fafc17dc9162
font_01_sfnt_off0000f7aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AA 11212 bytes
SHA-256: 73cb823393bf352034c08d66863598930822baa2216fbada4b7c685bcd3e42cc

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