Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1608b3b63976db9…

MALICIOUS

PDF

80.8 KB Created: 2021-03-08 15:43:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 649e8a8b1f854a21db948f3b2931ce5a SHA-1: 13f95f0c6fbe295cff98d18d834c32d0c8ee3721 SHA-256: b1608b3b63976db91ba857847eb8c89012abb9819dbd296041b6ef6b2756ef33
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/aws?utm_term=what+to+bring+for+vehicle+inspection+nj PDF link annotation
    • http://vivekawiga.sportsontheweb.net/what_is_the_meaning_of_the_idiom_raise_the_roof.pdfIn PDF document text
    • http://gidonuvawugirid.medianewsonline.com/spanish_food_vocabulary_activities.pdfIn PDF document text
    • http://mailedflkf.site/zubopixafuzibobimgawm.pdfIn PDF document text
    • http://kumajamefe.getenjoyment.net/rojim.pdfIn PDF document text
    • http://alcozerox.com/gumebidajozesj7o1.pdfIn PDF document text
    • http://vrestoran.info/805842823377yvlr.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/hoover_windtunnel_rewind_hepa_filter.pdfIn PDF document text
    • https://zedusolurifi.weebly.com/uploads/1/3/3/9/133999882/wewuxakeripom_vazexubozilavu_kapime_xedawofu.pdfIn PDF document text
    • http://gloslides.com/494536551986jrl1.pdfIn PDF document text
    • https://vomodubezu.weebly.com/uploads/1/3/5/3/135398809/pupugevis.pdfIn PDF document text
    • http://hrushch.space/352876629204538p.pdfIn PDF document text
    • http://segowesilo.iblogger.org/12626368222.pdfIn PDF document text
    • https://zekabijixakosu.weebly.com/uploads/1/3/0/8/130813896/9533409.pdfIn PDF document text
    • https://vopesowe.weebly.com/uploads/1/3/4/6/134638419/rasojegewexoxikelon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasesazolaf.myartsonline.com/how_to_connect_jlab_air_executive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169a72b4-daea-443f-8029-f7f0e54bc569/deborovafumafipijas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af51b300-899a-40be-96c5-a3c5a81526dd/moog_sub_37_techno_patches.pdfIn PDF document text
    • http://lefanivewog.epizy.com/vedidokokidujule.pdfIn PDF document text
    • http://famekemij.epizy.com/assassins_creed_odyssey_dialog_symbols.pdfIn PDF document text
    • http://vejosekafabij.rf.gd/its_kind_of_a_funny_story_full_movie_download_480p.pdfIn PDF document text
    • http://garorores.rf.gd/74011244108.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f51f8685-2a16-4750-a6ef-5779831d060b/49917720314.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_off0000fc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6F 5568 bytes
SHA-256: 27329c42a67216a28ed4de975dee90837f3388afda24fc1d14bee5ef45cca6b6
font_01_sfnt_off00010f75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F75 11324 bytes
SHA-256: debf602b8bc823d14c064aec9aed4480be9e0d30ef570dface7277ccb465cff3

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