Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba5adcbb24b7d95…

MALICIOUS

PDF

75.4 KB Created: 2021-04-01 04:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ea34095efeb499e74545a4baef66c644 SHA-1: e16facb965c1c39e4aaa7fc8f7f52f89a2e1b49f SHA-256: aba5adcbb24b7d95011d8f4dd432ce01fd794b5cfb6ad07280e1830f044cb3f9
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms or phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/strik?utm_term=how+to+make+a+paper+airplane+the+best
    • https://cdn.sqhk.co/loganidob/chjAFDo/snail_race_timer_online.pdf
    • https://cdn.sqhk.co/manaruparil/ixeJheR/26746870064.pdf
    • https://lerexujirizafet.weebly.com/uploads/1/3/4/3/134344290/1281862.pdf
    • https://pifonexivusefeg.weebly.com/uploads/1/3/1/0/131070190/zodareki.pdf
    • https://cdn.sqhk.co/pugepavofu/gjMjhif/zepoxikanifizikofupulonuj.pdf
    • https://cdn.sqhk.co/kelopifagisu/gM3ehdK/amtrak_routes_wisconsin_to_florida.pdf
    • https://cdn.sqhk.co/reruzemafow/jQIeGkB/shopdisney_baby_yoda.pdf
    • http://jobs-ingenieur.best/download_steven_universe_episodes_freeuysaa.pdf
    • https://cdn.sqhk.co/siripeka/hiQ4hid/arijit_singh_love_songs_mashup_mp3_download.pdf
    • http://twitter-center.com/jarifodozimezovajuloverimxa2j7.pdf
    • https://cdn.sqhk.co/foxuninulini/ihjjlvW/minokenabukisonepulenew.pdf
    • https://jupolojujilozas.weebly.com/uploads/1/3/4/5/134598947/kavebomogujav.pdf
    • https://cdn.sqhk.co/losopodelim/gSgcjcb/10432228513.pdf
    • https://cdn.sqhk.co/zepigelona/IeOhfjj/xokoxilixe.pdf
    • https://cdn.sqhk.co/perokokamosa/l1qgihi/90253769441.pdf
    • https://cdn.sqhk.co/zosurinipin/d2jel3M/tifitemufepetujilukawef.pdf
    • http://reduslim-buy.site/7525840887410cou.pdf
    • https://cdn.sqhk.co/xajamenujo/ggDrgig/mastercraft_new_building_game.pdf
    • http://delaem-sami.online/sedonumasoxinixuluguzoqm74v.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5a6f10fa-d1a4-42ca-a607-37fbad48dea4/law_of_torts_in_india_free_download.pdf
    • https://uploads.strikinglycdn.com/files/0d9d1cd7-825d-4afa-a89f-73f48cb2ba51/the_horus_heresy_-_book_four_conquest.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_off0000eb7a.bin
0af196fc95b39618b44678df77dfab7c1b7f67af69930dddd67a2d654af882c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB7A 5316 bytes
font_01_sfnt_off0000fd66.bin
1383a17f54ae1bf1e3462f44f6dace35348a89e0e62e9f234089cc57b6906339		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD66 10184 bytes

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