Malicious PDF — malware analysis report

Static analysis result for SHA-256 50060edde3665610…

MALICIOUS

PDF

82.1 KB Created: 2021-04-07 15:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e854c9543da24f5d30bced29b5f5c06b SHA-1: 1204339963def1f9df0200e7bf9ad91692809647 SHA-256: 50060edde3665610f997dee7e3b988bd28ccba59159520c3f671f6e3291086d8
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 0.9991

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://bologen.ru/strik?utm_term=south+carolina+driver%2527s+license+eye+exam PDF link annotation
    • http://wijetaz.mypressonline.com/8540282974.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/behbhaZ/71929005746.pdfIn PDF document text
    • http://rumepado.mypressonline.com/wemijolisadilibigidut.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/eYggjdw/smart_connect_netgear_r7800.pdfIn PDF document text
    • http://gozenozidejon.22web.org/34465695003.pdfIn PDF document text
    • http://fonivoguko.medianewsonline.com/xiler.pdfIn PDF document text
    • http://vezizulavojunif.22web.org/68878148998.pdfIn PDF document text
    • http://zumufufup.sportsontheweb.net/ninoruxu.pdfIn PDF document text
    • http://sokuzise.iblogger.org/greenhouse_effect_in_bengali.pdfIn PDF document text
    • https://cdn.sqhk.co/texafikogot/dIgdhj4/gun_builder_elite_android_1.pdfIn PDF document text
    • http://mipedinujit.22web.org/canada_post_rates_2020.pdfIn PDF document text
    • http://silekutum.medianewsonline.com/34278264620.pdfIn PDF document text
    • http://juvozukatug.66ghz.com/88768506652.pdfIn PDF document text
    • http://degifutuv.scienceontheweb.net/aashto_lrfd_bridge_design_specifications_8th.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/949a8dfb-de8f-49e2-9034-bc37adb3eb9f/xufamanawiguforiz.pdfIn PDF document text
    • http://rafokusavuti.epizy.com/najupeduwedaniruwiva.pdfIn PDF document text
    • http://wozitoso.atwebpages.com/33603580005.pdfIn PDF document text
    • http://lenidifumejuvig.rf.gd/casio_ctk_7000_manual.pdfIn PDF document text
    • http://lavisekenesavof.myartsonline.com/wetozefokawetegoxuba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08ca003e-ba98-4a68-8cb0-2fbb330de2b5/how_fast_can_a_2020_mustang_go.pdfIn PDF document text
    • http://jugomirusulove.atwebpages.com/15905174587.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2676ffc-bfe1-44d4-b4f8-428b93d0a385/will_the_rest_of_ff7_remake_be_free.pdfIn PDF document text
    • http://pozisez.rf.gd/bartok_mikrokosmos.pdfIn PDF document text
    • http://kewetanetoza.atwebpages.com/cuisinart_dcc-1200_coffee_maker_parts_list.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_off0001028c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028C 5548 bytes
SHA-256: f5777b756e240f245e9448bdbc0774798ebdc80e24253f3bf715b4581229268f
font_01_sfnt_off00011554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11554 10844 bytes
SHA-256: 46606df22cbc0eec6350774127aedf5190bf199147402e1e552a967607aba7c4

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