Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb1803f7c53eadc0…

MALICIOUS

PDF

69.9 KB Created: 2021-04-08 07:38:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e2e7241b7ae0acad03742b43d507b60b SHA-1: 7a48b400b1a3e81b73a1ab9cd3c0df239395e539 SHA-256: fb1803f7c53eadc03053576ec4fb3ad6f17d1711eb91a6361bdab22c6dd45318
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The embedded URL `https://pelibifir.ru/wix?keyword=unit+2+foundations+of+american+government+test+answers` suggests a phishing lure, aiming to trick users into clicking the link. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution attempt.

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://pelibifir.ru/wix?keyword=unit+2+foundations+of+american+government+test+answers
    • https://fuxovibafisiboj.weebly.com/uploads/1/3/0/8/130874455/681edd55e.pdf
    • https://vowebaxuzifov.weebly.com/uploads/1/3/0/7/130738870/7272495.pdf
    • http://redirunna.xyz/hoover_windtunnel_3_channels_of_suction_not_workingi307g.pdf
    • http://probmake12.xyz/bleacher_report_nfl_score_predictions_week_7nq7qk.pdf
    • http://jurexulekuw.22web.org/jodinupupazefitejanosesub.pdf
    • https://tagorawijetix.weebly.com/uploads/1/3/5/3/135392874/5562640.pdf
    • http://pimupafigofud.iblogger.org/28709559480.pdf
    • https://cdn.sqhk.co/pafatewodoju/fjcjfhb/ludo_star_free_download_for_windows_10.pdf
    • http://nesobaka3.xyz/towevabamujopudapelafu7afeq.pdf
    • https://cdn.sqhk.co/gumojitoxowu/jcthjja/let_s_talk_imdb.pdf
    • http://ampinternational.org/motipoxobawb9d2e.pdf
    • https://neloramobipetez.weebly.com/uploads/1/3/1/4/131407165/ba3b7e83f0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d8f03418-4cc8-405f-af46-ab97b3c2e22f/ralaxakimox.pdf
    • https://uploads.strikinglycdn.com/files/324e14b5-eff4-4985-ab3b-de3f4885c552/how_to_install_a_netgear_n300_wifi_range_extender.pdf
    • http://xapopifatudafa.rf.gd/types_of_environmental_impact_assessment.pdf
    • https://uploads.strikinglycdn.com/files/1fbbd664-74dd-4fa4-9f47-9e53dbe27326/tosax.pdf
    • https://uploads.strikinglycdn.com/files/7aa7b525-6127-4eb7-b217-74016f15d2e9/first_watt_f6_vs_f7.pdf
    • http://misezameliza.rf.gd/inoculation_method.pdf
    • http://jewixijanag.rf.gd/26680597938.pdf
    • https://uploads.strikinglycdn.com/files/52dfb0a1-f231-4f1d-9e00-3708d80bfc35/graphic_design_visual_essay.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_off0000d2b1.bin
b0246c628dc8dc082a24362f0b3a49030eab763665ce9a47fee9190b3935dd95
pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B1 5584 bytes
font_01_sfnt_off0000e5b4.bin
2ba1aedc631cce1a0e1e7fe6b1fccfa05018e0953409c50a3ff43b725a02ddf2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B4 10580 bytes