Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ec5ed2b5d16c51b…

MALICIOUS

PDF

81.1 KB Created: 2021-03-05 05:40:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: e058c51e8462ff503ca0c4a12aa13965 SHA-1: 1b4ec069197c00503f821e2b1da7ac9a721d806e SHA-256: 7ec5ed2b5d16c51b2331b6893bc07d72c5e55004237744ab07455d9c79c87145
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing lure related to the document's apparent content about calorie information. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/strik?utm_term=how+many+calories+in+a+jersey+mike%2527s+club+sandwich PDF link annotation
    • http://koteyarn.moscow/64073618511wou5i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423714/normal_6016fab23218d.pdfIn PDF document text
    • http://flylovel.com/skinseed_messenger_apk_iosjqlhh.pdfIn PDF document text
    • http://kogutojoveso.mywebcommunity.org/fowukenuj.pdfIn PDF document text
    • http://how2clever.com/zomakeboramelupeten6xhhw.pdfIn PDF document text
    • http://vuwiwetidajin.mywebcommunity.org/86337941414.pdfIn PDF document text
    • http://henrysavbr.site/kadelapanulesugo5u3h3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455370/normal_602476191c9fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465387/normal_600b2ba3471ce.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/mipeboro/47156079532.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3299f0bb-acba-46eb-8ddf-d0520b98df00/36020551484.pdfIn PDF document text
    • https://s3.amazonaws.com/minaxigevani/dejidevajobasojatelen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5644117d-ce42-4706-9d3c-15275d4ff31b/9181090653.pdfIn PDF document text
    • https://s3.amazonaws.com/kofabube/oxygen_49_3rd_gen_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/belt_and_road_initiative_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/bawodiwitesazakuzuwuzop.pdfIn PDF document text
    • https://s3.amazonaws.com/senodiw/5312438231.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/42704268040.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/046bd2ed-cfb4-4695-9f18-c559c16e1fda/27821734915.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53eb260b-e657-469b-a654-90b143ad1012/75379127065.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/65017366577.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_off0000fb88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB88 5648 bytes
SHA-256: aaed4be2e37d053209d6a891e400439de5ef1b1fbee7cd09e81fec2c49671276
font_01_sfnt_off00010ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA5 11336 bytes
SHA-256: e0f1cd80f38d18c60b7567289c232a1f8cf236a9ebac55bb876640387a386e7a

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