Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ab097d9a04207c2…

MALICIOUS

PDF

99.6 KB Created: 2021-03-16 10:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0d9e1c4d0eed39593272b47c58480642 SHA-1: a730c6082033b99287222cf2ae6b9aceec5f2b02 SHA-256: 7ab097d9a04207c2da6154f300c772355813a3f180f4595988cb60fcc094a645
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, containing numerous external URLs pointing to various domains, many of which are hosted on disposable or suspicious platforms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded URLs suggest an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://golowaki.ru/strik?utm_term=libro+de+f%25C3%25ADsica+2+bgu+resuelto+2020 PDF link annotation
    • https://zexonozanefamiw.weebly.com/uploads/1/3/1/1/131163740/kofomobime.pdfIn PDF document text
    • http://todayit.pro/171303625472p89a.pdfIn PDF document text
    • http://tanolugulutewu.medianewsonline.com/resmed_airsense_10_autoset_how_to_adjust_pressure.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/13148805287.pdfIn PDF document text
    • https://fogasofimoxor.weebly.com/uploads/1/3/1/0/131071298/xidokalot.pdfIn PDF document text
    • https://livupojinobiz.weebly.com/uploads/1/3/1/8/131856358/rofatewefit_lusidapufe.pdfIn PDF document text
    • https://nunibuzobaga.weebly.com/uploads/1/3/0/7/130740367/vonivegojukevo.pdfIn PDF document text
    • http://study-english-04.space/wabimuvonamujapodo0lz5y.pdfIn PDF document text
    • http://reloturuvum.22web.org/34023479522.pdfIn PDF document text
    • https://pojekemo.weebly.com/uploads/1/3/4/4/134469054/jodiv_fitomoku_papenusujenu_gisak.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/logical_reasoning_examples_with_answers.pdfIn PDF document text
    • http://potuxoposutu.medianewsonline.com/sahaja_yoga_chakras.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/31893347835.pdfIn PDF document text
    • http://dufifudusimube.mygamesonline.org/sibigiwovivinumepu.pdfIn PDF document text
    • http://biwiroxefamir.mywebcommunity.org/tnpsc_assistant_system_engineer_syllabus.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
    • http://rofuvawitarul.atwebpages.com/why_is_my_john_deere_mower_not_starting.pdfIn PDF document text
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_6419173bd3a24bf7a065b43cbb9260c1.pdf?index=trueIn PDF document text
    • https://e0fa0743-814d-41de-b6a5-47f787911882.filesusr.com/ugd/89d2ef_31cca1a4448d462194e4393e180e8498.pdf?index=trueIn PDF document text
    • http://sewoxoxitif.rf.gd/dowaxawofumagof.pdfIn PDF document text
    • https://1bf92926-22d0-44a1-94fb-b51843c41cd5.filesusr.com/ugd/762c1a_7debd33fc1944a8295ae74d041f94014.pdf?index=trueIn PDF document text
    • https://9526c93a-d340-4dca-b5fd-2864ff0888c4.filesusr.com/ugd/4c3d6a_fbb41a746f694636ac2401618b74dc85.pdf?index=trueIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C9B 5376 bytes
SHA-256: d68fc817ad64ab81e0e9f3e7d1a8e1e66f39215e18d70929295299075de1a4a5
font_01_sfnt_off00012ef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF7 13668 bytes
SHA-256: 3b974e6809ea7fb62903ceaacf362c4edefc55769e23b4fe86fa61ea34887158
font_02_sfnt_off00015b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B58 16204 bytes
SHA-256: e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
font_03_sfnt_off00017086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17086 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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