Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ba3590060e8adf8…

MALICIOUS

PDF

79.7 KB Created: 2021-03-21 23:32:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab14f7a18db1aef8648a89afc9a7562b SHA-1: 94e735a257511ec9050fd4319840a76ac353beed SHA-256: 5ba3590060e8adf89269cbade659386d84862df8deeb826cdb885f805cb7a0a3
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to disposable domains, which is a strong indicator of a phishing or malware distribution attempt. The heuristic firings, particularly the ML classifier and ClamAV detection, confirm the malicious nature of the file. The document body, though heavily obfuscated, appears to be a lure related to a parade, likely to mask the malicious intent of directing users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://nipisod.ru/wix?keyword=mickey%2527s+once+upon+a+christmastime+parade+2013
    • http://pexarinolal.mypressonline.com/assembler_fichier_adobe.pdf
    • https://cdn-cms.f-static.net/uploads/4387709/normal_6019509e77275.pdf
    • http://bewujasixi.mywebcommunity.org/singular_and_plural_words_list.pdf
    • http://berimigigo.22web.org/38584600166.pdf
    • http://fosireditoj.mygamesonline.org/how_to_invest_in_stock_market_for_beginners_philippines.pdf
    • https://cdn.sqhk.co/jikikavadaja/dkggjaF/72040153273.pdf
    • https://static.s123-cdn-static.com/uploads/4451766/normal_5fe4142ca2c08.pdf
    • http://gometug.22web.org/free_landing_page_templates_bootstrap.pdf
    • http://kizogadojutenam.22web.org/how_to_remove_stand_samsung_cf390.pdf
    • https://static.s123-cdn-static.com/uploads/4416332/normal_5fff067a261ee.pdf
    • https://cdn.sqhk.co/tagodepa/Djjghhi/diamond_c_saddle_shop_lewiston_idaho.pdf
    • https://cdn.sqhk.co/daxegajok/Yyuhxq2/40686823483.pdf
    • https://cdn.sqhk.co/nodujugebi/5xMgihi/save_the_earth_raise_a_hippie_svg.pdf
    • https://cdn-cms.f-static.net/uploads/4407057/normal_6044920e47059.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_76d3cf3914ff45c48ded5937bc018be8.pdf?index=true
    • https://73e25548-3913-4bbb-aa69-a1b25f69568d.filesusr.com/ugd/cece23_bd56f6b1659149ae88f0b955d51a930c.pdf?index=true
    • http://zoletiwosi.rf.gd/utilitarianism_by_jeremy_bentham.pdf
    • http://bugenerefajujus.atwebpages.com/86572838403.pdf
    • http://sajoveguduv.onlinewebshop.net/52913556908.pdf
    • https://uploads.strikinglycdn.com/files/159c88a7-2b9f-4f01-82ca-bf124950065f/sanizufudon.pdf
    • https://5902ff30-e651-486c-ac37-3e8383bfa78f.filesusr.com/ugd/f35da0_073a2f31c42943169a73a80adc2ce035.pdf?index=true
    • https://uploads.strikinglycdn.com/files/67f18e40-e4ba-4c5b-96ad-f41372f961f9/nikon_d40_battery_charger_price_in_india.pdf
    • https://uploads.strikinglycdn.com/files/e28b6a77-be59-44f6-9b8e-e74b12a7bba8/how_much_does_a_developmental_editor_cost.pdf
    • http://bexovaxi.epizy.com/aroma_rice_cooker_arc-150sb_replacement_parts.pdf
    • https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_8c19c0c7e29346f6aaa7f39f8e5ffcc1.pdf?index=true
    • 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_off0000f71e.bin
49f006756a992d4fd08de45945a19fa7efd464ee3c760826f0a609e38c873a58		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF71E 5976 bytes
font_01_sfnt_off00010b6e.bin
5d65a5ec1c4d7f61301d2369ad91c63fb33788e55c90144590195e09921f90c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6E 10464 bytes

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