Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d80b78637a2f183…

MALICIOUS

PDF

71.5 KB Created: 2021-03-27 17:53:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3b497c6ed95284c91003c09a05069e20 SHA-1: c2f37a3c33afa5b5aabdc6bb6d33b68c7185e569 SHA-256: 7d80b78637a2f183b71811013140ce7f8c282aea5f58e9d80e6942812cfc1cc8
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 numerous embedded URLs, many pointing to disposable domains or link farms, suggesting an attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains references to 'epic sports live app free', indicating a lure for users seeking such content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/123?utm_term=epic+sports+live+app+free PDF link annotation
    • https://cdn.sqhk.co/rodoruwuwab/aib5iba/fireboy_watergirl_forest_temple_primary_games.pdfIn PDF document text
    • http://kugenezajiz.22web.org/core_java_tutorial_for_beginners.pdfIn PDF document text
    • http://mrshadow.net/remington_870_express_tactical_magpul_12_gauge_18.5_barrelvr8w5.pdfIn PDF document text
    • http://interbank.link/from_the_mixed_up_files_of_mrs_basil_movie_common_sense_mediao8gir.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/gbhc0jN/army_of_darkness_defence_mod_apk_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387031/normal_5fda92c3eb23b.pdfIn PDF document text
    • http://likelid.xyz/949209090302r8rk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501198/normal_603f30fc0e629.pdfIn PDF document text
    • http://potenciy.xyz/11781504813yhzn1.pdfIn PDF document text
    • http://womenalikumat.22web.org/43332387995.pdfIn PDF document text
    • http://lulikike.iblogger.org/95585839804.pdfIn PDF document text
    • https://cdn.sqhk.co/rabataxuvax/boHDOp8/metropcs_phone_number_closest_to_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_6011aa4871b9b.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/22fde63d-2f49-4be1-9e10-581131456d5e/lg_front_load_washing_machine_wont_drain_or_spin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fd82c7-8b33-42ff-99a7-110118bec410/biketurilotipifesuwisun.pdfIn PDF document text
    • http://pajipiruk.rf.gd/mijalijedepaseziri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b37ff33b-2781-4d77-95e7-ac22ea657771/how_much_does_your_permit_cost_in_ny.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75c85c6-bd5b-4b65-9307-0f85c3562041/nekuvoluzanoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b523a84-8523-4edb-a68c-b518f7b1f9b5/37150684088.pdfIn PDF document text
    • http://wuguwusilabibax.epizy.com/amaravati_kathalu_file.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/066f7aae-b532-4b04-866f-f5e147b26771/structure_of_dna_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34c3631e-cb70-448e-898f-318ab8c9deae/18698941635.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_off0000dcda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCDA 5028 bytes
SHA-256: 0167ae6b549b403b3a265c21260ae8dddb71df78efc21b20be231de4978ed922
font_01_sfnt_off0000ee14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE14 10144 bytes
SHA-256: 0374f0d701c1fe1e2196920a950044bf6bc5f73dcdb4dbbd1e8023fab8c141f3

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