Malicious PDF — malware analysis report

Static analysis result for SHA-256 48784c6b2120a253…

MALICIOUS

PDF

71.9 KB Created: 2021-03-08 02:16:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f3b7fcb4e45e8cb7ce16d67670893fde SHA-1: 5d9b2b51e7a7f8e2b59b5993403b42f6739dcd50 SHA-256: 48784c6b2120a2539d135cb0827d341b361aec3469e2c4a7985cb55e1414e7f0
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains multiple external URIs and is flagged as a link farm on disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a tactic of luring users to external malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=dyson+v7+service+manual PDF link annotation
    • http://mafaregasinuviv.22web.org/xufuvatixubeji.pdfIn PDF document text
    • http://wurogutevifo.iblogger.org/gewogikerurotural.pdfIn PDF document text
    • http://geekcods.com/50935328363xixxy.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/jimemetozovuginibe.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/fifirurivatiwaju.pdfIn PDF document text
    • http://zusagukitu.mywebcommunity.org/jaeger_lecoultre_atmos_clock_repair_manual.pdfIn PDF document text
    • https://niritamin.weebly.com/uploads/1/3/4/4/134486676/xiburofidus-radosisunen.pdfIn PDF document text
    • http://neluvukod.22web.org/dejegamep.pdfIn PDF document text
    • https://kapofered.weebly.com/uploads/1/3/2/6/132680839/govato.pdfIn PDF document text
    • https://jaxanawunolat.weebly.com/uploads/1/3/0/7/130739567/vozogaxemuken-davidanuzefekoj.pdfIn PDF document text
    • http://vorecan.fun/what_is_the_power_of_the_mind_stonerrpn7.pdfIn PDF document text
    • https://ravagowezotivix.weebly.com/uploads/1/3/6/0/136094193/51052cd0ea9.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/2c3ed363-71cd-4bb4-9256-935b3f8a857e/techno_gears_marble_mania_shockwave_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a54ad698-94f8-4790-9632-27ae32d01738/polirusorodalegatawile.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/28058760876.pdfIn PDF document text
    • http://lewemezitena.rf.gd/44853255924.pdfIn PDF document text
    • http://wikilupari.epizy.com/61854393994.pdfIn PDF document text
    • http://vakegugurebuv.rf.gd/duvakoxifubibo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1b3eab9-9968-4b28-a1bf-e80da46f5adc/can_a_lexus_rx_350_tow_a_trailer.pdfIn PDF document text
    • http://pepebejawu.epizy.com/wedding_invitation_video_template_without_text.pdfIn PDF document text
    • http://zozasozam.epizy.com/webroot_secureanywhere_antivirus_for_mac.pdfIn PDF document text
    • http://zaduzos.myartsonline.com/yo_amo_a_paquita_gallego_capitulo_30.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_off0000dc12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC12 5184 bytes
SHA-256: da166c1439411d0752c914453de8c4a8e9906a32491efab13c86236032397852
font_01_sfnt_off0000edb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB9 10884 bytes
SHA-256: c5803754fe262f4612cf17937319c7da21a6e34f2dee4bca6cb4cb1fa9c01616

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