Malicious PDF — malware analysis report

Static analysis result for SHA-256 24aae685d9a6dde7…

MALICIOUS

PDF

80.1 KB Created: 2021-04-01 00:08:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3f71d0ff398ab56ce60afedab5ad3195 SHA-1: 716f0b2a0a90894618c4de88ed8bfd06c47c6780 SHA-256: 24aae685d9a6dde7da564b08db6c63d797c7817a6904f67ebab6425f97b5fb13
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://lozipotod.ru/wix?keyword=primary+alcohol+general+formula PDF link annotation
    • http://strahuemsya.info/film_1anunnaki_sub_indop9jsu.pdfIn PDF document text
    • http://tumbaa.space/85581345723d2pd.pdfIn PDF document text
    • http://table-wait.com/what_oscars_did_lord_of_the_rings_return_of_the_king_win62kue.pdfIn PDF document text
    • https://cdn.sqhk.co/sijaxovada/Ziay5S6/d_of_e_assessor_report_online.pdfIn PDF document text
    • https://nugakiru.weebly.com/uploads/1/3/6/0/136050310/nilafufavava.pdfIn PDF document text
    • https://cdn.sqhk.co/ributexovek/iihipgj/63984155900.pdfIn PDF document text
    • http://afracheat5.xyz/toyota_camry_se_2021_featuresl4xra.pdfIn PDF document text
    • https://rasaputale.weebly.com/uploads/1/3/5/3/135323831/vegeronakekapefarura.pdfIn PDF document text
    • https://cdn.sqhk.co/xawodoze/2NOjdhd/simple_senior_phone_app.pdfIn PDF document text
    • http://generatorsale.ru/jelojetadawozl19b9.pdfIn PDF document text
    • http://lifeshop.pro/61351296709xszh0.pdfIn PDF document text
    • https://muzifadisuluso.weebly.com/uploads/1/3/5/3/135347683/4753647.pdfIn PDF document text
    • http://silkhfig.bid/felasojx93mc.pdfIn PDF document text
    • http://goldenframecollision.com/xarewapapk8l5r.pdfIn PDF document text
    • https://cdn.sqhk.co/ninilevikod/nRvdky9/1275939006.pdfIn PDF document text
    • https://lakiliwurig.weebly.com/uploads/1/3/6/0/136089988/jakuzepotasitugat.pdfIn PDF document text
    • http://dostafood.xyz/how_to_use_acurite_meat_thermometera93y2.pdfIn PDF document text
    • https://cdn.sqhk.co/xumupojamax/hhauWgf/nelaxupewadose.pdfIn PDF document text
    • http://insitemonitoring.com/monster_hunter_stories_2_charactershi3w4.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/299aba5a-482c-43e5-b110-c345b993d746/ejercicios_de_limites_trigonometricos_con_tangente.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5588c7b5-2565-40e9-a7cf-0b91f3794f8a/maytag_bravos_quiet_series_300_washer_manual.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_off0000f97d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF97D 5220 bytes
SHA-256: e87c60efb6f0cf2e56b5d6161e0bb27db13f2960743d3090a23ef9c3010ffd3f
font_01_sfnt_off00010b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B20 11828 bytes
SHA-256: 31a4575a5feb108355a54b58e2aa2f4d7cdac43e62f647edd01e649937e4d425

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