Malicious PDF — malware analysis report

Static analysis result for SHA-256 225b1e21d2df7e8d…

MALICIOUS

PDF

78.1 KB Created: 2021-03-10 15:34:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 3476fa8ea78667bc46d28253f4caf18e SHA-1: 358c5678e1b9c930f3bca5fff8260a7e9ff6b41f SHA-256: 225b1e21d2df7e8d9f548180d7883ba4e7be987942269cfcf354bfedfb221784
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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://xezojetit.ru/award?keyword=tennis+elbow+exercises+pdf+arthritis+uk PDF link annotation
    • https://cdn.sqhk.co/zidodovare/nNoig6I/50844517613.pdfIn PDF document text
    • http://xijonofupawulo.mypressonline.com/ancient_greek_olympics_facts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428331/normal_5ff864f718628.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/rTlprie/kafawemej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371267/normal_6007abb8f0cbb.pdfIn PDF document text
    • https://cdn.sqhk.co/womibakok/fDDhdRO/tiles_stores_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/siripeka/4id6jat/jumping_frog_toy_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/suwapipejob/bhh0XcS/the_arcade_rabbit.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402250/normal_5fefbee44e7b6.pdfIn PDF document text
    • http://paxejunon.mygamesonline.org/john_deere_x304_bagger_attachment.pdfIn PDF document text
    • https://cdn.sqhk.co/sosexazefip/jbbXSid/88882068622.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459466/normal_5fcd371e2a747.pdfIn PDF document text
    • https://cdn.sqhk.co/xolofiwano/jhhc1HV/evacuation_map_california_wildfires.pdfIn PDF document text
    • https://cdn.sqhk.co/juwafajem/Ahiifo6/ropaviwopa.pdfIn PDF document text
    • http://tejasatobes.medianewsonline.com/makud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418993/normal_60088e8b0a26c.pdfIn PDF document text
    • https://cdn.sqhk.co/lekaguko/chfagh3/wepine.pdfIn PDF document text
    • https://cdn.sqhk.co/minederepa/eZhhqST/57139948159.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/b9103c2c-fe8e-4972-9745-68fbc3cc429d/40311239189.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee0da50-6097-4062-afd8-a06ff65e5de5/zazojijaxobemaxe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1c28a1f-a3dd-4b4b-b064-8f1255572b45/how_to_convert_my_evenflo_car_seat_into_booster.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/is_twilight_breaking_dawn_part_3_coming.pdfIn PDF document text
    • http://zenakezogutomu.onlinewebshop.net/18066474709.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_off0000f41c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF41C 5556 bytes
SHA-256: 83cf31a916f9cc1430800d5fa1df6996c09904ddbbee0ed82e7c6f1a493774cf
font_01_sfnt_off00010709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10709 10384 bytes
SHA-256: c5bd7fbe8a948f62bea6932e2b8782777ad61c615a18f795647d465dab02b921

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