Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2130bfdc70faeeb…

MALICIOUS

PDF

74.6 KB Created: 2021-03-16 11:10:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2353a7b6833c333a4494da67db4f13a SHA-1: 61f9a6cc43b36492adee05c4094d1d6887b070bb SHA-256: d2130bfdc70faeeb651c3e11e7b86834940a623d71d115bf44a980391fe449ff
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The embedded URLs point to potentially malicious domains, and the document body, though obfuscated, suggests a lure related to digital art templates.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/123?utm_term=digital+art+portfolio+template+free
    • http://noksipals.online/spectrum_music_visualizer_premium_apk_downloadpojhi.pdf
    • https://ragedoxe.weebly.com/uploads/1/3/0/8/130873846/6615878.pdf
    • https://fekakekofum.weebly.com/uploads/1/3/4/6/134656499/jopab_zozotafen_sawer_vorumujalevali.pdf
    • https://cdn.sqhk.co/sasibasodiwu/gdjjghG/nail_it_then_scale_it_download_free.pdf
    • http://surupumigo.mypressonline.com/palliative_care_nursing.pdf
    • https://cdn.sqhk.co/wakewafo/doghVgg/double_sided_tape_for_woodworking_templates.pdf
    • http://gukiduwonaxinef.getenjoyment.net/52643100121.pdf
    • https://sufivelogazawe.weebly.com/uploads/1/3/4/6/134600369/9cbc7.pdf
    • http://mumolazesinidix.getenjoyment.net/types_of_architectural_drawings.pdf
    • http://daimontimur.org/will_hillsborough_county_schools_reopen_in_august_20206jc3y.pdf
    • https://cdn.sqhk.co/sizafutito/Nicc2ja/2537700037.pdf
    • https://gojafone.weebly.com/uploads/1/3/4/8/134891791/50329c3c.pdf
    • http://stavki-na-sport.site/angry_birds_2_cast_axelit0ho.pdf
    • http://4gusevshop.space/trumpet_sheet_music_avengers_themex9vhp.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d0ed79ee-3276-4c11-bd74-654cf866ccca/how_to_reset_check_engine_light_2011_nissan_sentra.pdf
    • https://uploads.strikinglycdn.com/files/3649d32e-bbbe-45ef-a82d-c6c17bbe217b/reflexive_verbs_spanish_activities.pdf
    • http://tasefabomodewiv.epizy.com/acpi._sys_windows_8._1.pdf
    • https://uploads.strikinglycdn.com/files/a522e261-cfc9-4809-a59f-5a823dcf6c7e/prince_lionheart_wipes_warmer_without_pillow.pdf
    • http://totuxivez.onlinewebshop.net/vigid.pdf
    • http://letufikafiv.epizy.com/is_there_going_to_be_a_hansel_and_gretel_witch_hunters_2.pdf
    • http://danidarexixuw.epizy.com/lizoderus.pdf
    • http://nifekubipaxo.epizy.com/kadevu.pdf
    • https://uploads.strikinglycdn.com/files/ff7a4814-e439-450b-8a23-267509d664d3/snapper_self_propelled_lawn_mower_walmart.pdf
    • https://uploads.strikinglycdn.com/files/e8a0c7cc-0a22-48a7-873b-ec6a29dec9cb/the_missing_piece_west_seattle.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e827.bin
821430372373763d4fbf332bbeb1d487859028fde4024fe7988c8f92e6c29e84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE827 5040 bytes
font_01_sfnt_off0000f945.bin
76bf34933f0272d8567d68a29787855132f32cf2b41a81ce344a742d0b7b4407		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF945 10444 bytes

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