Malicious PDF — malware analysis report

Static analysis result for SHA-256 346c26195381b68b…

MALICIOUS

PDF

81.7 KB Created: 2021-03-23 20:05:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 7615f625f0aa4eac7b7bc6a84fd1bb91 SHA-1: 3e3ec8d088cedd0c42cea2cdcc9e9b45d8f5e5be SHA-256: 346c26195381b68b97a777131318e1bb7d1838abbdfc6bf4b0beb47469258fa5
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9993

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 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://bologen.ru/aws?utm_term=programming+arduino+pro+mini+3.3+v PDF link annotation
    • http://mediaverifiedbadge.com/33163134425wlqym.pdfIn PDF document text
    • http://cocobuka3.xyz/cut_the_cake_ball_gamen8o5j.pdfIn PDF document text
    • http://rentline.pro/bosimitixafumesilasi2le29.pdfIn PDF document text
    • https://gixeroparot.weebly.com/uploads/1/3/4/5/134586235/272338.pdfIn PDF document text
    • http://madamzero.com/the_language_of_flowers_vanessa_diffenbaugh4stsu.pdfIn PDF document text
    • http://eslife.pro/sakoxikipufafisiwyv9w.pdfIn PDF document text
    • https://napajudiweji.weebly.com/uploads/1/3/4/3/134316113/tusaramekebirefenin.pdfIn PDF document text
    • https://vuwapelenepaje.weebly.com/uploads/1/3/4/7/134705438/92d849303ee3e7.pdfIn PDF document text
    • http://sell-toclick.online/how_to_connect_carrier_thermostat_to_wifi7wged.pdfIn PDF document text
    • https://gokefezenomi.weebly.com/uploads/1/3/4/0/134040807/7572995.pdfIn PDF document text
    • http://qiwi-wallet.online/15982508324vpner.pdfIn PDF document text
    • https://topalezomezo.weebly.com/uploads/1/3/4/3/134305389/bamegizasilusag.pdfIn PDF document text
    • http://www19216801.site/72202987162hkwvk.pdfIn PDF document text
    • http://teenagetutor.net/zibasumorax0z455.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/vetamedisoz/zowinabekizuzotuzoxoxaj.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/raraguron.pdfIn PDF document text
    • https://s3.amazonaws.com/povodijirig/spanish_colors_worksheet_middle_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1afb47b6-ba21-476c-a209-6702e45e9754/electrical_engineering_major_average_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/how_many_calories_in_fruits__vegetables_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/sample_file_of_bonafide_certificate_format.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/877c7b47-1ced-46e3-b560-1c829cfe0dd6/junior_software_developer_jobs_melbourne.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/tejipuwajifoxikafofejozi.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/english_alphabet_writing_worksheet_free.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/48816121204.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be26f376-5132-43df-84df-0b07b6d75033/what_are_the_purposes_of_informational_text_structures.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_off00010027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10027 5324 bytes
SHA-256: 55c4d650a56a74f23fb6adb575249a21761e6fcb9f8df8f0af05ad5ae73bc7eb
font_01_sfnt_off0001123f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123F 11520 bytes
SHA-256: 2f4d71c8e6f9ed868dc82a7e1b08c0157e6a0960ec49a8fe830fe290d0765371

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