Malicious PDF — malware analysis report

Static analysis result for SHA-256 654b5e9218e3ec42…

MALICIOUS

PDF

79.2 KB Created: 2021-04-05 13:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d06077c1c5babb7891df63d7117a35a SHA-1: 75965391f74eebde90ee89e082e635c2a198f056 SHA-256: 654b5e9218e3ec42e4b0b9ed3194b4e7e293e4d7da4e327006c749f17e42cf8c
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs that redirect to external sites, suggesting a phishing or malware distribution attempt. The presence of PDF-specific heuristics and the general nature of the extracted URLs point towards a common attack pattern of luring users to malicious domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://bologen.ru/wix?keyword=abstract+example+apa+6th+edition
    • http://wixujikubipom.mygamesonline.org/scientific_names_of_flowers.pdf
    • https://static.s123-cdn-static.com/uploads/4406191/normal_5ffc20ac599eb.pdf
    • https://cdn-cms.f-static.net/uploads/4455399/normal_602d82002d653.pdf
    • https://cdn-cms.f-static.net/uploads/4413011/normal_60162411259fe.pdf
    • https://static.s123-cdn-static.com/uploads/4421468/normal_5fedead1c014d.pdf
    • http://mudikovarew.mygamesonline.org/jarolavavigulaparol.pdf
    • http://sozapemogoz.mygamesonline.org/vepepixupari.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pokorevalaxex/prentice_hall_united_states_history_modern_america_online_textbook.pdf
    • https://s3.amazonaws.com/fumiposamisur/suzasobexuzenasukunam.pdf
    • https://s3.amazonaws.com/regovadeje/51301271710.pdf
    • https://s3.amazonaws.com/tesasubawalozan/influenza_virus_treatment_guideline.pdf
    • https://s3.amazonaws.com/suximawo/laruwelidul.pdf
    • https://s3.amazonaws.com/puretulenuza/beauty_cam_for_windows_7.pdf
    • https://s3.amazonaws.com/kuboki/32403102046.pdf
    • http://dozuxix.myartsonline.com/83944201166.pdf
    • https://s3.amazonaws.com/xukonakefules/paradobadujujelob.pdf
    • https://s3.amazonaws.com/mokixetat/the_book_of_life_songs_lyrics.pdf
    • https://s3.amazonaws.com/gebukil/behringer_x_air_xr12_digital_mixer_manual.pdf
    • https://s3.amazonaws.com/rafiralexezol/55467489941.pdf
    • https://s3.amazonaws.com/jivagajamav/tewasotujelodudinated.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_off0000f79c.bin
8dde82b82b285ecb3ad9290daca6e663707f4f97bb8faa81272c737cbd3012a3
pdf-font-stream PDF embedded font (sfnt) at offset 0xF79C 5664 bytes
font_01_sfnt_off00010aac.bin
27a9d033614582489f79f075b7ba8832703396a00a048279dc52dd92aef99426
pdf-font-stream PDF embedded font (sfnt) at offset 0x10AAC 10752 bytes