Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7da5a9078885327…

MALICIOUS

PDF

92.7 KB Created: 2021-03-23 18:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 1e574f4ae396d1f9f9507126dfdf0b93 SHA-1: 53e18ac01c86c7fefddbac48c61b02f1a01d0831 SHA-256: d7da5a907888532792fd291445a9943c755a10e17fc13690a3d5bd71e6c7e23a
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 0.9952

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://gimoguvi.ru/strik?utm_term=cuisinart+coffee+maker+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/rigidaluta/gfhb2vD/53312401098.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408712/normal_5ffa0c9d14472.pdfIn PDF document text
    • http://simopuvoramawu.mywebcommunity.org/jaybird_x3_not_pairing_with_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378382/normal_6022bf93541de.pdfIn PDF document text
    • http://setovewurepenu.22web.org/11897475254.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414687/normal_5fecbb8d941ca.pdfIn PDF document text
    • http://gijipodotetojo.22web.org/29512192181.pdfIn PDF document text
    • http://talemine.getenjoyment.net/the_book_of_tomorrow_cecelia_ahern.pdfIn PDF document text
    • http://noveratufexi.22web.org/86453682499.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487897/normal_604a7a260601f.pdfIn PDF document text
    • https://cdn.sqhk.co/muwitajo/iggjedB/5013867909.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481055/normal_601443e427750.pdfIn PDF document text
    • http://gewututikame.getenjoyment.net/sevinolanovafi.pdfIn PDF document text
    • http://budivev.scienceontheweb.net/zubanoporufuzi.pdfIn PDF document text
    • http://xariketixagat.mypressonline.com/britax_car_seat_installation_rear_facing_latch.pdfIn PDF document text
    • https://cdn.sqhk.co/komajekolino/2EWZXzP/spectacled_bear_cub.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/mufukep/fomijifa.pdfIn PDF document text
    • http://fojeropiralamab.rf.gd/partitura_de_autumn_leaves_para_piano.pdfIn PDF document text
    • http://renaxodemebi.rf.gd/wozukepixuleme.pdfIn PDF document text
    • https://s3.amazonaws.com/tevomenil/8897762674.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/how_did_the_alliances_contribute_to_the_start_of_ww1.pdfIn PDF document text
    • http://gofosuxubajo.epizy.com/80319187598.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/kunov.pdfIn PDF document text
    • http://mubidixosi.epizy.com/avid_media_composer_8.pdfIn PDF document text
    • http://nibatozov.epizy.com/58695414977.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/42601933212.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ea3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA3 5268 bytes
SHA-256: 1383c868525bb3a6cde709273e1de107e6b2969224b76a53167f86d6c5db2a88
font_01_sfnt_off00013078.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13078 11112 bytes
SHA-256: b624aa6f6129e56ba03e3268ba66caf0486c789477f5e0a3bb394f91903280df
font_02_sfnt_off0001563d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1563D 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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