Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d112f3f4c200a6b…

MALICIOUS

PDF

87.3 KB Created: 2021-03-18 02:37:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 259325320b5719884625cef0cfb1f6eb SHA-1: 98d3bd8aadcd906ea5420fdc5fcc7b0fcb380cd3 SHA-256: 0d112f3f4c200a6bd381d60d88374ce55a63344c900199cee5d00f3bf410d18b
186 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 0.9998

Heuristics 6

  • 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.
  • 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://resalured.ru/strik?utm_term=project+scope+management+plan+example PDF link annotation
    • https://cdn.sqhk.co/vasibejovej/Zvfjhie/new_bollywood_song_ringtone_2018.pdfIn PDF document text
    • https://begagezegitajaj.weebly.com/uploads/1/3/1/3/131398046/nulovuvor.pdfIn PDF document text
    • https://vavinaxedekofew.weebly.com/uploads/1/3/0/9/130969509/bozapugurer-vaputuwitaluse-denoxinavarurud-pakiwo.pdfIn PDF document text
    • https://jakilirimilibev.weebly.com/uploads/1/3/4/8/134862861/150045.pdfIn PDF document text
    • http://csxmoney.info/35438267723wukkd.pdfIn PDF document text
    • https://nixifekenebuj.weebly.com/uploads/1/3/0/7/130775280/3870339.pdfIn PDF document text
    • http://italiahot.fun/bajizilinozjj08s.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/g9ZtVgT/pandora_s_box_image.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/f6uHPib/86880401103.pdfIn PDF document text
    • http://italysummer.fun/67153621934tk8t0.pdfIn PDF document text
    • https://punafatig.weebly.com/uploads/1/3/1/4/131408139/zadep_tiwulume_livimegezovo.pdfIn PDF document text
    • https://cdn.sqhk.co/jibenapola/hihfhb0/how_to_win_friends_and_influence_people_audiobook.pdfIn PDF document text
    • https://jopokiwajisi.weebly.com/uploads/1/3/4/1/134108554/jilipisim.pdfIn PDF document text
    • https://pidujalibogi.weebly.com/uploads/1/3/1/3/131380128/zisoduruxizakekaz.pdfIn PDF document text
    • http://sweetmeet.online/japejufuet2dm.pdfIn PDF document text
    • http://glawerry.online/83497966669tm7re.pdfIn PDF document text
    • https://lexapokugivida.weebly.com/uploads/1/3/1/8/131856754/2c8cfc42c659d2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f61d51b-80c3-4c61-a8dd-06c939e7d296/citizen_skyhawk_at_limited_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/61c54817-46ee-4592-91ea-4d28646ac5da/geveragumi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/32cc0b09-5ef0-4ff4-b44b-8752171b8371/2874693448.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_off00011a5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A5F 5400 bytes
SHA-256: 54da956904073f49fb2dc746a85965e282e8f87ea14b0bd24bb31462944d9085
font_01_sfnt_off00012caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CAF 10364 bytes
SHA-256: b56a265f2ac7985ccfc64306fa3336c97363c12002522c3115dd51de1435eb2f

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