Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d32db0869036100…

MALICIOUS

PDF

71.5 KB Created: 2021-03-31 02:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: b607fcfb08e8c688b1795792090003ca SHA-1: 045ef0ff4c5bfb52cbe8f167d68b49f1f75125f9 SHA-256: 4d32db08690361007ad81f5f72bfabd2869841187c5dda9f3d246526331aa4a7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous external URIs, with one prominent URL pointing to 'lozipotod.ru', likely serving as a lure. The document body, though heavily obfuscated, suggests a context related to 'Hp 7525 ink', which is likely a pretext to drive traffic to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/strik?utm_term=hp+7525+ink PDF link annotation
    • https://turetufifej.weebly.com/uploads/1/3/4/5/134500159/7589255.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375518/normal_5fe5f6e1b6bef.pdfIn PDF document text
    • http://zexofezureza.iblogger.org/lldm_cantos_en_ingles.pdfIn PDF document text
    • https://sexozorojupur.weebly.com/uploads/1/3/4/3/134390270/ca26d50dbdc2a63.pdfIn PDF document text
    • http://xegazinijitup.mywebcommunity.org/62633705480.pdfIn PDF document text
    • https://lisevududotuwak.weebly.com/uploads/1/3/4/2/134265384/befisoririfema_gekonir_jinega_jegukizezis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387060/normal_60567cbed5cef.pdfIn PDF document text
    • https://teduruperalugo.weebly.com/uploads/1/3/4/3/134320262/dajogefabojodofej.pdfIn PDF document text
    • http://kedutugadow.iblogger.org/why_is_my_thermostat_display_blank.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374021/normal_5fca231076e0b.pdfIn PDF document text
    • http://gopagafab.medianewsonline.com/cissp_8_domains_summary.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/cc10414b-11e4-4601-a9a6-e99b00afb56b/what_two_factors_affect_the_density_of_seawater.pdfIn PDF document text
    • http://xixumosujo.rf.gd/abbyy_transformer_2._0_full_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71eb24ee-efa4-4399-924d-7881a72d3f08/how_much_is_newsmax_tv_on_spectrum.pdfIn PDF document text
    • http://kafotafuvodalix.onlinewebshop.net/56542376827.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1f229a8-279b-4740-877d-56a98f059274/linear_and_non_linear_text_worksheet.pdfIn PDF document text
    • http://nivufebolira.epizy.com/pijefapewesiduka.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/wali_band_ya_allah.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff83690-5849-4d89-84cd-0e39e2329cf0/greenworks_1700-psi_1.2-gpm_electric_pressure_washer_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d23ae55-5453-4dce-954d-1ac66153759e/how_to_train_your_dragon_2_cast_characters.pdfIn PDF document text
    • https://s3.amazonaws.com/liwafo/home_design_software_for_pc_free.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_off0000dbb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBB6 4656 bytes
SHA-256: 63954cf29a0e554b8b24c019856e31111d1fb739b71aa7dce104a1ddc1877989
font_01_sfnt_off0000ebba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBBA 11052 bytes
SHA-256: 73e396b312fb6f280025f8b70d84f4d0926df15ba4450f5edb77ea0d87303cf2

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