Malicious PDF — malware analysis report

Static analysis result for SHA-256 6caf0914ad7a19f7…

MALICIOUS

PDF

90.5 KB Created: 2021-04-01 14:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b55caf87b7fc88a495d63cbfcf7baf7 SHA-1: 173f53ca707c42ff3738d70bdbea77cab727192d SHA-256: 6caf0914ad7a19f720756dec752d886fa7ad7d28c6f1dd05dcf7bb39b12db8c9
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a suspicious domain, likely used for phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to shopping, suggesting a lure to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://golowaki.ru/aws?utm_term=air+force+1+white+cheap+womens
    • http://pannochki-art.com/kill_bill_whistle_ringtone_for_iphonepzigu.pdf
    • http://dressnbuy.com/figurative_language_in_the_tell_tale_heartywhw2.pdf
    • http://gogotmif.space/infinite_fighter_shadow_of_street_apk_downloadtrghf.pdf
    • https://jekazaveme.weebly.com/uploads/1/3/4/4/134470158/kutukuwiwujatataku.pdf
    • http://sutobep.getenjoyment.net/94524687438.pdf
    • http://mexicotop.xyz/39305204632ogsi5.pdf
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/gefoguso.pdf
    • http://italywow.pro/243705221868c5ox.pdf
    • http://ramidavukul.medianewsonline.com/acute_respiratory_distress_syndrome_2020.pdf
    • https://wurivebufe.weebly.com/uploads/1/3/0/8/130874680/4638032.pdf
    • https://gepufefodu.weebly.com/uploads/1/3/4/0/134013389/takerixel-kemareworetul-sezejapubebajov.pdf
    • http://meroxisawifagu.mygamesonline.org/gibezodagamepafufefufupa.pdf
    • http://wepovak.iblogger.org/63016993963.pdf
    • http://vobalemujumojak.mywebcommunity.org/what_are_the_allowable_tax_deductions_for_2020.pdf
    • http://tafugegajotu.mygamesonline.org/lodukazanutozegusabatoki.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://gomugugagaf.onlinewebshop.net/divergent_book_chapter_25.pdf
    • http://xotaferuju.myartsonline.com/13000953157.pdf
    • https://fe2b84af-b373-48e0-a714-f820169e3fe9.filesusr.com/ugd/ed1d2e_0d6a6a498154427b8265ba2588f077f6.pdf?index=true
    • https://a68e2ff5-bf17-48e3-82d4-ceb975b85758.filesusr.com/ugd/760101_efa82317cb564b80b34fc837d6550ca1.pdf?index=true
    • https://bdee3e82-1fe6-4084-b289-f15f5249f83e.filesusr.com/ugd/749937_baca7c2143b9497b8750cce3ac4fad96.pdf?index=true
    • http://timojodabemisux.myartsonline.com/actuador_neumatico_genebre.pdf
    • https://4647adb0-9c01-46a1-aef1-4380d5873f13.filesusr.com/ugd/edb4a7_1f5a6049abab4b9dba2cddc5ff936756.pdf?index=true
    • http://ledaruwevegoxu.onlinewebshop.net/sanitary_inspector_gujarati_book.pdf
    • http://koradanizepagow.myartsonline.com/how_to_use_ipad_as_writing_tablet.pdf
    • http://lutidufewujasa.epizy.com/16153960138.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_off000123c1.bin
35856b882e2be1aeba62f5b2c0104a069f7dce93f26187b64ff7907331187186		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123C1 5356 bytes
font_01_sfnt_off000135eb.bin
9655f1c361bf74ae684bb243cec26df293ec1019b5d08caccd235434021e92ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135EB 11084 bytes

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