Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b0fcac3674fe15…

MALICIOUS

PDF

83.6 KB Created: 2021-04-09 02:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3d0fb32f1c27b79036bbdc2c93ccb218 SHA-1: f0025622a1b63b59467a7ebfe9d5e26ec2763100 SHA-256: 68b0fcac3674fe151c6a0cfe398f161346d4803ad4462aac0ca25012d4594422
126 Risk Score

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 0.9990

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://jottigo.ru/strik?utm_term=how+to+use+the+ninja+air+fryer+toaster+oven PDF link annotation
    • http://topcreditscore.info/simple_italian_words_to_learnbclu9.pdfIn PDF document text
    • http://fenapokasufawum.22web.org/weekly_hourly_schedule_template.pdfIn PDF document text
    • http://senteber.site/19171153484btehv.pdfIn PDF document text
    • http://save50it.info/zapunulajamosxkah.pdfIn PDF document text
    • http://viwimewi.22web.org/ditorepufapefibiz.pdfIn PDF document text
    • http://inglassrus.ru/puvokodilunf8nhj.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/d_d_5e_baldur_s_gate_descent_into_avernus_download.pdfIn PDF document text
    • http://xoxosedefoxadu.mygamesonline.org/convolutional_neural_network_python.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/mijumomub/aila_re_aila_dj_remix_song.pdfIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_64c0a4af08ef4466a8668cc26008121f.pdf?index=trueIn PDF document text
    • http://gajitigigezujan.epizy.com/mental_health_recovery_principles_australia.pdfIn PDF document text
    • https://26577e91-18e8-42c3-8e85-49dcca1d6605.filesusr.com/ugd/195787_4ab20eed64e64c789261ba6573b7e53b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pazatuv/chevrolet_cruze_2011_service_manual.pdfIn PDF document text
    • https://fad58b31-c538-4d3f-828d-7998eec853b9.filesusr.com/ugd/7e6083_59fe534d84b44770a46bbf3f40ba18ac.pdf?index=trueIn PDF document text
    • http://pidusagi.atwebpages.com/58368852938.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/cyclohexane_properties.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/how_to_teach_a_child_the_five_senses.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/connect_vizio_soundbar_to_tv_bluetooth.pdfIn PDF document text
    • https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_2ace9990eb914f158e9bf9eece6db229.pdf?index=trueIn PDF document text
    • https://e4c06157-4c4c-4c30-848d-1ce07482e123.filesusr.com/ugd/99e070_c891b352ad1a43b190972b6f7767f8b6.pdf?index=trueIn PDF document text
    • http://tuminexozuvino.atwebpages.com/20516544725.pdfIn PDF document text
    • http://biverak.epizy.com/scotts_lawn_mower_repair_scottsdale.pdfIn PDF document text
    • http://fukekixejup.epizy.com/77685155011.pdfIn PDF document text
    • http://felawikemuda.epizy.com/piano_sheet_music_tyler_the_creator.pdfIn PDF document text
    • http://jexuzutipeku.epizy.com/anthony_burgess_earthly_powers.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_off0000fc88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC88 4996 bytes
SHA-256: cffd7524548deea1a108645bd50d7c52c86981c02b319790b738a70a49dca1bc
font_01_sfnt_off00010d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D92 10860 bytes
SHA-256: 635917f2fd3452741b25b887207deea3b5b25b7d26743cc1b816cb133bd8fa96
font_02_sfnt_off00013273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13273 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f