Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bf0b891fc0849fe…

MALICIOUS

PDF

70.9 KB Created: 2021-03-16 13:33:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: b93a550af397a96fa59af73a7bc9ffc4 SHA-1: 581b58121774f8511fe8e275e2814e5a768e1bb2 SHA-256: 0bf0b891fc0849fe22313e7096c24172717d28620e6b0f98a22ed9e07f6f0476
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7004

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 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
  • 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://jumiwimov.ru/award?keyword=tabla+de+la+alcoholomania+pdf PDF link annotation
    • https://fuwosijeven.weebly.com/uploads/1/3/0/7/130738701/jowomikafa_dedobogorevituf_jafogalonan_ruwipixawubafi.pdfIn PDF document text
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/figegulelitumo_mibinefuwegezi_nobivetave.pdfIn PDF document text
    • https://gugekomu.weebly.com/uploads/1/3/0/9/130969097/gunoworidu.pdfIn PDF document text
    • https://gumotijilazu.weebly.com/uploads/1/3/1/6/131637190/lonanutukup_kavemazaxijev.pdfIn PDF document text
    • http://komakukamuduwi.iblogger.org/sesofozawumiwowok.pdfIn PDF document text
    • https://kizozejibudi.weebly.com/uploads/1/3/4/4/134460324/gubiwupanuf.pdfIn PDF document text
    • https://zutizogemene.weebly.com/uploads/1/3/5/3/135348028/zizuzujetir.pdfIn PDF document text
    • https://nusuvonofa.weebly.com/uploads/1/3/1/8/131872273/nepagig-puxutipu.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/depoj.pdfIn PDF document text
    • https://dunegigamirusa.weebly.com/uploads/1/3/1/4/131437715/sepupamofuzol_garelogizojekot.pdfIn PDF document text
    • https://dozogifelezu.weebly.com/uploads/1/3/4/3/134313369/lezewilupupoxixo.pdfIn PDF document text
    • http://naxiramomamaz.66ghz.com/list_of_collective_nouns_download.pdfIn PDF document text
    • http://lorebip.22web.org/kinaluxejobebezitifemi.pdfIn PDF document text
    • http://zoguponuwuxoli.medianewsonline.com/19430018316.pdfIn PDF document text
    • https://xowebanum.weebly.com/uploads/1/3/1/4/131453595/2308832.pdfIn PDF document text
    • https://nenikekawudiw.weebly.com/uploads/1/3/4/4/134468161/0c65051d98c3eb8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tesoxukezeziles.epizy.com/saturated_steam_vs_superheated_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/69487693938.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/sizarivofikufenevidewujub.pdfIn PDF document text
    • http://bezumopure.rf.gd/everstart_maxx_jump_starter_700a_review.pdfIn PDF document text
    • http://lojabupabavize.onlinewebshop.net/what_is_the_best_workout_machine_to_lose_weight_at_home.pdfIn PDF document text
    • https://s3.amazonaws.com/zolerazowubow/lepromatous_leprosy_case_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/74971463600.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/un_report_on_climate_change_march_2019.pdfIn 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000108ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108CE 5208 bytes
SHA-256: 2d8e29595b796a27c9cc39e6f8bdf5d7b6108446bfb0ef1530c9c24c2db6415a

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