Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc177e82dcc49ef4…

MALICIOUS

PDF

107.2 KB Created: 2021-03-09 16:07:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 72119edbff5f9016898113feedc3bc82 SHA-1: ac2938f96f88944f56afaae67f5a23e1359f257b SHA-256: fc177e82dcc49ef4071d093d6ebd3701002dc24cc1b9b47e5f237cc8bf2e5753
126 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF contains numerous external URIs, with one prominent URL pointing to a suspicious domain, suggesting it functions as a link farm. The presence of embedded URLs and the overall structure strongly suggest it is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://midufefew.ru/123?utm_term=android+firestore+timestamp PDF link annotation
    • http://gobigs.space/ya_me_entere_acordes_tecladomu5fv.pdfIn PDF document text
    • http://situbune.iblogger.org/26550561170.pdfIn PDF document text
    • http://jisilasi.22web.org/81027404227.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/34646363317.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/wills_eye_philadelphia_broad_st.pdfIn PDF document text
    • http://lnstagram-blue-ticks.com/rising_stars_maths_year_6_answerso9olw.pdfIn PDF document text
    • http://dipugipedanam.sportsontheweb.net/martial_arts_training_for_adults_near_me.pdfIn PDF document text
    • http://liketsven.xyz/tonuzetizipegavapawudipatnac77.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d9e73b2-9fd1-47bf-9ce4-0956d998a34e/segafababudikolitax.pdfIn PDF document text
    • http://gosovugan.epizy.com/30816958144.pdfIn PDF document text
    • https://8d94caac-80d5-4f6d-a73a-04ed47837dc1.filesusr.com/ugd/585b1d_167398f743854455b6df63f4375646c6.pdf?index=trueIn PDF document text
    • http://suwiwomuve.rf.gd/45409834201.pdfIn PDF document text
    • http://wepatimaleb.epizy.com/99302710378.pdfIn PDF document text
    • http://suduxegowur.onlinewebshop.net/the_tattooist_of_auschwitz_quote_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e0ef433-61b6-42e2-9403-3eedabc63fe6/fekoni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51873831-2618-4600-80a2-c62a2e9fd940/ronuvipuwutubifavuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88ccc468-f6f5-4c42-9665-dcd0bb7a69ea/define_tone_poetry.pdfIn PDF document text
    • https://3a00e800-a8eb-44ae-aafc-ae9aecab8e06.filesusr.com/ugd/1715bf_936ac563c840435eb14b59e40e4021b7.pdf?index=trueIn PDF document text
    • http://kivozusemu.atwebpages.com/rancilio_silvia_e_v6_espresso_coffee_machine_2020_model.pdfIn PDF document text
    • http://tubujaj.epizy.com/all_bhajan_song_odia.pdfIn PDF document text
    • http://karonipekedopel.epizy.com/56249432860.pdfIn PDF document text
    • https://700ceb37-22d2-47c5-9888-d858af679aee.filesusr.com/ugd/c345b0_5a4e203b907c44f99bf06a387f13eed3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/08178618-4a3e-4c0a-bae6-1e2501a9357c/nedukiloxijeti.pdfIn PDF document text
    • http://kipenul.epizy.com/82443796333.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_off00016069.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16069 5144 bytes
SHA-256: 4b93b73cd0005bf6962b78b0108821240b9bba9a97473890d848e3ee9f9613fa
font_01_sfnt_off000171d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x171D4 14452 bytes
SHA-256: f764aad92e329287583e0462710e0a50e189aa72b2d942fd9bd517b031780bf1

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