Malicious PDF — malware analysis report

Static analysis result for SHA-256 975483eabcf9f009…

MALICIOUS

PDF

66.4 KB Created: 2021-03-25 21:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d8b5693f8d0dd3077fc9d7e59eb45abc SHA-1: 91385ce9f36671f8599334897c99047be3ad41e5 SHA-256: 975483eabcf9f009afeb5c6ffd8e5d35aa985feca212816faba7ce7ff81401fe
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 0.9997

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://jacksth.ru/aws?utm_term=ion+idm02+power+supply PDF link annotation
    • https://zatakigufexip.weebly.com/uploads/1/3/0/7/130738978/2632920.pdfIn PDF document text
    • https://nokajavu.weebly.com/uploads/1/3/0/9/130969653/37a39c2.pdfIn PDF document text
    • http://vevapefin.sportsontheweb.net/sociology_notes_pakistan.pdfIn PDF document text
    • https://vitafidazi.weebly.com/uploads/1/3/4/7/134728623/9061235.pdfIn PDF document text
    • https://jarovoxo.weebly.com/uploads/1/3/4/5/134511136/wosemiguxorer.pdfIn PDF document text
    • https://gepidoduxaw.weebly.com/uploads/1/3/5/3/135324144/ninafe.pdfIn PDF document text
    • http://befotuke.mywebcommunity.org/how_many_cubic_feet_is_an_apartment_size_fridge.pdfIn PDF document text
    • http://fupemagis.mywebcommunity.org/arguments_for_and_against_euthanasia.pdfIn PDF document text
    • http://bajesiradevo.getenjoyment.net/atlas_anatomy_human_body.pdfIn PDF document text
    • https://bipozoxadedisaj.weebly.com/uploads/1/3/1/1/131164124/4888064.pdfIn PDF document text
    • https://soridafufunet.weebly.com/uploads/1/3/5/3/135308698/ladoto-bomekanawoput.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kedisijusa.onlinewebshop.net/sony_s-master_digital_amplifier_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tapelu/call_of_duty_ww2_android_offline.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8974477a-0942-4796-acf1-43c915e31ba6/the_christmas_carol_film_1984.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/danganronpa_2_pet_gift_guide.pdfIn PDF document text
    • http://xefiposokupama.myartsonline.com/gomifanum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e70e9f-f639-46ba-8b03-afdefc974210/42209539054.pdfIn PDF document text
    • http://bepolujogox.atwebpages.com/69290603743.pdfIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/vajixojixevas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b0bccf1-9243-4190-b846-3e59fb811962/the_stranger_author_harlan_coben.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/how_to_read_a_person_like_a_book_audiobook_free_download.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_off0000c723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC723 5300 bytes
SHA-256: 5d84cb1738aa31afe5c36deb615e6d7575a6d5ef7ce97791234cbc9f9bea14dc
font_01_sfnt_off0000d92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD92D 10348 bytes
SHA-256: 7194b0423e5fc78cc031c9942d312924efe0379eaf2f8861f050dea58ab46246

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