Malicious PDF — malware analysis report

Static analysis result for SHA-256 1469b35e13b448a6…

MALICIOUS

PDF

75.5 KB Created: 2021-03-30 09:23:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: beda86696450bcb225e9cb0bf2ae64db SHA-1: ecb8d26e345301547fbacbf7db2a3bce06ba6175 SHA-256: 1469b35e13b448a66b521c5fc7d214359838f4b81aeafc05c9a3e3bd7ac4c4fc
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which point to potentially malicious domains, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier also indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to PDF conversion, directing users to suspicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://jumiwimov.ru/award?keyword=conversion+of+binary+to+other+number+system+pdf PDF link annotation
    • http://bonifacy.site/dungeon_masters_guide_5th_edition_pskoqs.pdfIn PDF document text
    • http://luchdobro.site/titanolabapedebulaximiz3wtjh.pdfIn PDF document text
    • http://lojasamericanasbr.com/30944123023q3n8k.pdfIn PDF document text
    • https://xopozutafedas.weebly.com/uploads/1/3/1/4/131453480/8043630.pdfIn PDF document text
    • http://didanak.22web.org/12085775115.pdfIn PDF document text
    • https://pepevifive.weebly.com/uploads/1/3/4/4/134480859/dejaburisevakuwanu.pdfIn PDF document text
    • https://duzigolanulemo.weebly.com/uploads/1/3/2/6/132680867/85f7d1ed98878d6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tubukeganuji/kifazonapewarajijovutu.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/denizabipofi.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/serizewexa.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/14972202876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fd9f1b9-9659-40b1-be68-d000774d89a8/what_batteries_does_the_ingenuity_bouncer_take.pdfIn PDF document text
    • http://benifolagalat.epizy.com/how_much_is_wifi_on_allegiant.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6db1e465-1352-4e35-8795-fca448c57710/nitaxalukemixeripujus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65320c2e-14ed-44ea-a8ea-2815da2ee6f7/dreams_bring_back_all_the_memories_song_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75a81259-247a-42e1-8242-e00aa89c5e15/28864917765.pdfIn PDF document text
    • http://kazuwipumup.epizy.com/82526757300.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/illinois_annual_report_fees.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d6922a9-975a-45fe-b0f5-bfac6a7242f4/chamberlain_liftmaster_41a5021_1g_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/pemibibunafifadi.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_off0000e9b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B7 5456 bytes
SHA-256: a7002cf3a12217a428b734cdc8f5eed2125c64b7e9494b8333c65a6917246147
font_01_sfnt_off0000fc1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1E 10420 bytes
SHA-256: 42bcc4a9a7e23df15c77fb09ceb06f7d694a10339edde89a51773c0643845bde

Open this report in the interactive analyzer, or submit your own file for analysis.