PDF malware analysis — malicious · 742e6bc9a7cdbb32

MALICIOUS

PDF

85.1 KB Created: 2021-03-16 22:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20

MD5: c419f085c8d8b56d665f293ef93bfd72 SHA-1: ba732fc71a7787abee87534ff40c192cc778da91 SHA-256: 742e6bc9a7cdbb3215c042530fad9b133c7f0d004119a2e68c5c643681de7e8d

126 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with the primary one being 'https://fokemale.ru/strik?utm_term=irregular+verbs+list+english-russian', suggesting a phishing or malware distribution attempt. The document body, though partially corrupted, indicates a lure related to 'Irregular verbs list english-russian', which is likely a pretext to direct users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9995

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://fokemale.ru/strik?utm_term=irregular+verbs+list+english-russian PDF link annotation
- http://blockingscenery.com/728206064409szl8.pdfIn PDF document text
- http://vumexovuvelafe.medianewsonline.com/49489351223.pdfIn PDF document text
- http://emmetrix.net/mazijexibuvupufagusovugwwf52.pdfIn PDF document text
- http://gumidaz.medianewsonline.com/44978994749.pdfIn PDF document text
- https://lefilima.weebly.com/uploads/1/3/0/7/130775934/wagewexobopi-fojerepenilon-mipuw-dejitanujuwu.pdfIn PDF document text
- http://meine-gebuhrenfrei.com/vaworekepigolojie8doe.pdfIn PDF document text
- http://sugameloxufe.mywebcommunity.org/110cc_pit_bike_semi_automatic_for_sale_uk.pdfIn PDF document text
- https://worojipe.weebly.com/uploads/1/3/1/3/131382243/d9f2595bd4a.pdfIn PDF document text
- http://sluzhba1.net/williams_wall_heateroe7ns.pdfIn PDF document text
- http://vuzuwul.getenjoyment.net/vetimamebogiz.pdfIn PDF document text
- http://rasezatoxefu.mygamesonline.org/how_to_make_a_storyboard_for_advertising.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://denijutogowe.rf.gd/breaking_news_india_tv_hindi.pdfIn PDF document text
- http://gegilifopom.myartsonline.com/reversing_secrets_of_reverse_engineering_1st_edition.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4c3f805f-bd5b-4972-aad2-5f741e1bb983/nofipirosasonelasuvi.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/6295c453-c348-41b4-8807-760ff70c552f/yard_machine_riding_mower_throttle_cable.pdfIn PDF document text
- http://situwosase.myartsonline.com/57534705757.pdfIn PDF document text
- http://nisetekotixob.myartsonline.com/how_to_get_my_brother_printer_back_online_windows_10.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/112d0b95-aaad-4f05-95de-2da4722a1923/37753707203.pdfIn PDF document text
- http://puwagof.rf.gd/lobuseronegiguxadabagaf.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/e999720d-8316-427d-8ea7-7a8a6b1c68d9/86376434751.pdfIn PDF document text
- http://kojajopi.epizy.com/verb_forms_look_like.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/720c0541-61da-4117-a733-d084bb965cdc/gejufuxakirezakulufikati.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.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f8ae.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF8AE	4888 bytes
SHA-256: `05dd4e91fb6b037eda377d7155916eac6e9efff83a25234ab27ecdba86df675b`
`font_01_sfnt_off00010943.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10943	15308 bytes
SHA-256: `07389309c30e4395b5065e3c42d5008d8afc6f515b2aaa439c638794010b51e6`
`font_02_sfnt_off0001389d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1389D	4324 bytes
SHA-256: `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`

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