Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c2363d9b5d23663…

MALICIOUS

PDF

76.7 KB Created: 2021-03-07 15:48:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7bd2831bddd3c527a15df541c756a6a8 SHA-1: c2a647e99d41beb7990d96a0ece0b37bb25254b0 SHA-256: 7c2363d9b5d23663e5b6a4712a36bab74d55b3dd59b326e8c6d7ec52c482472a
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure related to obtaining a driver's license, which is a common tactic for phishing or malware distribution. The presence of numerous external URLs, many hosted on disposable domains, further supports this assessment, as these are often used to host malicious content or redirect to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://leonvi.ru/123?utm_term=how+to+get+a+maine+commercial+driver%2527s+license PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369183/normal_5ffffd433b1c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477173/normal_6031bdf8c1bd5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490524/normal_5ffa95c565096.pdfIn PDF document text
    • http://foxilajat.sportsontheweb.net/31283160428.pdfIn PDF document text
    • http://detelibizonibi.22web.org/bandicam_gratis_full.pdfIn PDF document text
    • http://zawugudumi.getenjoyment.net/5540576943.pdfIn PDF document text
    • http://deutschebank-meine.com/3452472848d8kzf.pdfIn PDF document text
    • http://kunujunekedi.mygamesonline.org/61151923113.pdfIn PDF document text
    • http://flash-sar.online/mimaki_rasterlink_6_manualhh7oq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490720/normal_602c12171d0bb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426571/normal_6017c65033740.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_600dffc4aa1ef.pdfIn PDF document text
    • http://nexofozupugasi.mywebcommunity.org/20739091669.pdfIn PDF document text
    • http://uablog.website/how_to_bypass_john_deere_reverse_switchrcpuz.pdfIn PDF document text
    • http://reduslimitalia-official.website/time_traveler_s_wife_netflix_release_datex2uyk.pdfIn PDF document text
    • http://dupomixu.iblogger.org/80356598723.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_5fd3c13e9530c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501057/normal_60421f6d5807c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://piterar.epizy.com/fender_hot_rod_deluxe_lacquered_tweed_limited_edition_amp.pdfIn PDF document text
    • http://diguneleg.rf.gd/download_canoscan_lide_210_driver_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/gezebagisitijebuziw.pdfIn PDF document text
    • http://vulebodifoguvar.epizy.com/indian_delights_recipe_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/cars_fast_as_lightning_apk_data_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/49254247602.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/89811563693.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_off0000edd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD2 5404 bytes
SHA-256: d5c90eafa6f930beb3b6088d23f8f47c2bd5f78c1a840026f271e2583933fcf9
font_01_sfnt_off0001003e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003E 10716 bytes
SHA-256: 0abff2c10b25f7fefcae39a49429140061130ea7016ec153207fa5413d33b949

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