Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa249a1707fab135…

MALICIOUS

PDF

73.9 KB Created: 2021-03-06 10:50:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: bb299b745455a0cd900f368fd04b564b SHA-1: 287fcccec81e5dfc87521abdbce657aa8920acd4 SHA-256: fa249a1707fab13506a971c923eaa91743b947ce8ff8ff8a47308da030dbc182
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL, identified as malicious by ClamAV and ML classifiers. The document body, though heavily obfuscated, suggests a lure related to an 'answer key' for a 'lizard evolution virtual lab', indicating a phishing or social engineering attempt. The presence of an external URI points towards an attempt to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://zajinet.ru/wix?keyword=lizard+evolution+virtual+lab+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373508/normal_5ff080e350a29.pdfIn PDF document text
    • https://cdn.sqhk.co/nomitusibop/Xwygjhg/class_8th_science_ncert_book_solutions_chapter_15.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500911/normal_6006be3e7cb35.pdfIn PDF document text
    • https://cdn.sqhk.co/pojimisuso/YDChbje/jumakagerekodebubol.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428334/normal_600613c9ef512.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_601cbfc137c48.pdfIn PDF document text
    • http://vesajob.getenjoyment.net/falezagotumajupiraxutunu.pdfIn PDF document text
    • http://lomidal.mygamesonline.org/focusrite_scarlett_6i6_2nd_gen_no_hardware_connected.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/f3b03a35-d2b1-4a5c-863c-15b7e0d6f31e/33354417141.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/zeldas_lullaby_jillian_aversa_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/truecaller_caller_id_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc91aa6-0e90-4c14-9e37-cee1ac84cb02/weber_spirit_ii_e-210_2_burner_liquid_propane_grill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/adfe3ced-a9ed-4204-bd7a-da9f0a744ad1/hp_laserjet_pro_400_m401dne_specs.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/atari_star_raiders_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/muvevanepen/kaxiretekiritiju.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/dugokoganem.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/32989558761.pdfIn PDF document text
    • http://gekolutewubel.myartsonline.com/fatudok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c540c9f-164c-4c42-b9c0-e262ad93d33d/xaxopodukovutuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90fa626d-e012-4e1d-8f44-8688f6e1fc64/cutest_pics_of_baby_yoda.pdfIn PDF document text
    • http://zerowegujij.onlinewebshop.net/tonejud.pdfIn PDF document text
    • https://s3.amazonaws.com/mejados/5_minute_loving_kindness_guided_meditation.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_off0000e514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE514 5268 bytes
SHA-256: 598dc6b7d10b6c0a8f99f41c7098ab58e99ddb02feca83a9084100fba86a8315
font_01_sfnt_off0000f72f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72F 10328 bytes
SHA-256: dde3a3c70fcd9c14de39fbe701c9bac5abbe4b0b58ec64c52ee694610d3366e2

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