Malicious PDF — malware analysis report

Static analysis result for SHA-256 734b078cfffdd94b…

MALICIOUS

PDF

85.9 KB Created: 2021-03-20 14:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 29a37c5ca6589855c3dd171a66ce3af0 SHA-1: 9e75228f5bb4a65e5798539a3b6de47408676de6 SHA-256: 734b078cfffdd94ba62458577a15df7a06b23178745c2132354acd6b0dbc86a3
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 0.9993

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://ponafet.ru/strik?utm_term=coraline+book+art PDF link annotation
    • http://loveantravel.xyz/43821690129n6c7j.pdfIn PDF document text
    • https://cdn.sqhk.co/kakezesarop/ibujgUB/diesel_world_truck_sales_plaistow_nh.pdfIn PDF document text
    • http://bikejesoxatelo.mygamesonline.org/juwedesasivefo.pdfIn PDF document text
    • http://kinorio5.xyz/romasefafiwimu7p5g.pdfIn PDF document text
    • http://galosidijixiwu.mypressonline.com/how_to_study_the_bible_for_beginners.pdfIn PDF document text
    • https://cdn.sqhk.co/xobabowiwa/Sgh3Bgc/zuxapedazusiga.pdfIn PDF document text
    • http://pl50off.info/36121056474o37cm.pdfIn PDF document text
    • http://mejuzuw.scienceontheweb.net/verb_tense_consistency_worksheet_with_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386622/normal_6013bdfcde0c0.pdfIn PDF document text
    • https://cdn.sqhk.co/rafopaluko/8hbhdMW/22579781741.pdfIn PDF document text
    • https://cdn.sqhk.co/kemuxilajig/jaS7Vky/48668717039.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484635/normal_6004e8d508f04.pdfIn PDF document text
    • http://sexedate69.site/jubadoky3n0.pdfIn PDF document text
    • http://fuvisetitisenon.mypressonline.com/hp_elitebook_8540w_drivers.pdfIn PDF document text
    • https://cdn.sqhk.co/kivipemo/Coljfza/20686375296.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/3122a189-aafa-413e-8bc9-174d6be03b79/loxitatijojat.pdfIn PDF document text
    • https://s3.amazonaws.com/fobupojowojon/feremakevumusujafuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23ddf015-6a1e-406e-9240-f720bb53a986/vobidelemesup.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/cockles_and_mussels_piano_sheet_music.pdfIn PDF document text
    • http://judiserod.onlinewebshop.net/what_does_weber_grill_warranty_cover.pdfIn PDF document text
    • https://s3.amazonaws.com/najipavez/24350692961.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/78acc058-ae1a-4a2e-ae88-cfb10809c060/doxofiwibikew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fff8b54-7ec2-4f2f-b8a7-575140983f80/48394665994.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/wovanetegezidomu.pdfIn PDF document text
    • https://s3.amazonaws.com/gopifu/80871645828.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_off000113d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113D0 4612 bytes
SHA-256: 84024d657d68a3adb61b2b106baa7e49044406c9621b0b80d937d9013aa778ca
font_01_sfnt_off00012386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12386 11416 bytes
SHA-256: e1d08d8fea55cfb87b070907ea72090a5c41356b502f75cef4b26e3ae35d2f10

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