Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb8487374ed9e70…

MALICIOUS

PDF

75.2 KB Created: 2021-05-10 06:00:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: e2f22744fa2025bac062bae9eff7ade7 SHA-1: b54fb0c071c689f6e3605966ad598b1fbb1b55cf SHA-256: 1bb8487374ed9e701167356e31831584841427f5dee9780591a744d207734ac4
126 Risk Score

Malware Insights

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

The PDF document contains a lure related to making money on social media platforms, directing users to a malicious URL. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM and ML_NYX_PDF_MALICIOUS firings, along with the ClamAV detection, strongly indicate malicious intent. The embedded URLs are likely used to download and execute further malicious payloads.

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://vilenefex.ru/strik?utm_term=can+you+make+more+money+on+instagram+or+youtube PDF link annotation
    • http://juilopkiretlo.ru/talugofetogirajef9dvw1.pdfIn PDF document text
    • https://tupinikuwexopej.weebly.com/uploads/1/3/1/0/131070806/bogut-zodub.pdfIn PDF document text
    • http://podarokinsta365.site/jimunurewavuji3obd2.pdfIn PDF document text
    • http://sdek-24.cc/xerigogilirumuduedu8a.pdfIn PDF document text
    • http://afracheat9.xyz/how_to_setup_programing_troubleshooting_the_hampton_bay_low-voltage_landscape_transformersr2rm.pdfIn PDF document text
    • https://zorivaleguzovul.weebly.com/uploads/1/3/4/5/134596353/3e35c2d70.pdfIn PDF document text
    • http://blekrossi.ru/10780465504j0wwr.pdfIn PDF document text
    • https://radefikifuru.weebly.com/uploads/1/3/4/7/134723330/5348795.pdfIn PDF document text
    • https://ludakugoru.weebly.com/uploads/1/3/4/6/134698973/1d262bb5.pdfIn PDF document text
    • https://famonusowofem.weebly.com/uploads/1/3/4/3/134349488/xumopatum-sobofap-tanov.pdfIn PDF document text
    • https://rotemewan.weebly.com/uploads/1/3/1/3/131380756/dopinetawov.pdfIn PDF document text
    • https://muxetomanudone.weebly.com/uploads/1/3/1/4/131406273/foxubigulikubig-movanenufibi-kugoxin.pdfIn PDF document text
    • http://groby-ritual.online/1099542203px0fd.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/34069097670g69ac.pdfIn PDF document text
    • http://allerop.xyz/batman_1940_comics_for_saleu1ewi.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/kibavutibeved/babusan_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/34387197465.pdfIn PDF document text
    • http://wuzitipajupenok.rf.gd/five_go_to_billycock_hill.pdfIn PDF document text
    • http://kixixobaso.rf.gd/dedamajataguseboxezazot.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/wifi_signal_booster_app.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/dedaxagarurudivigidavupo.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/dbx_driverack_pa_crossover_settings.pdfIn PDF document text
    • http://puvuxepijoxum.rf.gd/ncert_books_for_class_5_maths.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9E6 5184 bytes
SHA-256: a0ee60e4b9ce00ea940b0721b19660bc19852ca898e5a7e1da28933c02611ade
font_01_sfnt_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 10460 bytes
SHA-256: 8c539da7e2a1b4175b8d0ca388b2d20d72d5f2b7d76c5554f9ac341fd243fbfd

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