Malicious PDF — malware analysis report

Static analysis result for SHA-256 6537e7b0ed7c7c05…

MALICIOUS

PDF

75.8 KB Created: 2021-06-01 06:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 33fc2f33c6aaf7654de5220a7214e98d SHA-1: 7a2a1c740c21b82fc7f57a60e5ebe8055a95d128 SHA-256: 6537e7b0ed7c7c0517b350586044711d0bbe2430ce546dc0650ca3c85a26b2c9
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, with one prominent URL pointing to 'garglob.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to 'wwe 2k17 xbox 360 caws download', indicating a lure to attract users to the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://garglob.ru/pbw?utm_term=wwe+2k17+xbox+360+caws+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500189/normal_5fe98e1ca811e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_604821ad4602d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461229/normal_5fcd294c3338f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489255/normal_603369e52e42d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fea2ec5608d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4c3d8b82-ba20-4f46-acc3-b9dd195e4973/36385164224.pdfIn PDF document text
    • http://mukonisu.pbworks.com/f/fortnite_mod_apk_unlimited_v_bucks_2021.pdfIn PDF document text
    • http://vatojorisa.pbworks.com/f/8776626252.pdfIn PDF document text
    • http://mumasenekera.pbworks.com/w/file/fetch/144417657/biduf.pdfIn PDF document text
    • http://vowujepojez.pbworks.com/f/55589154015.pdfIn PDF document text
    • http://vatojorisa.pbworks.com/w/file/fetch/144437820/mahabharat_star_plus_songs_download_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff309bdc-30d0-42f1-b40d-a42ac9b23504/hitachi_excavator_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e4ce9dcd-6e1e-4c87-9dae-b6b0ae3a3ce5/radetamugu.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/f/how_to_turn_alarm_off_armitron_watch.pdfIn PDF document text
    • http://vadibun.pbworks.com/f/saguxagetojaxuniminu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7496db-12aa-4ed8-940f-2915c76cfb37/is_the_2007_volvo_xc90_a_good_car.pdfIn PDF document text
    • http://risoxef.pbworks.com/w/file/fetch/144436482/43715869180.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19b81156-7289-4401-98be-c849c517361c/90270910120.pdfIn PDF document text
    • http://pokatufaxi.pbworks.com/w/file/fetch/144421191/rules_of_exponents_n.rn.1_worksheet_answers.pdfIn PDF document text
    • http://zikupuzajix.pbworks.com/w/file/fetch/144444567/pubimefuxofejefazi.pdfIn PDF document text
    • http://midevodimu.pbworks.com/f/45399027942.pdfIn PDF document text
    • http://tazijebep.pbworks.com/f/bobofolebinivoj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE5 5596 bytes
SHA-256: 46d2c5f131a6c045b76e48832427130885a925003ead08deb5e3f107ff642c24
font_01_sfnt_off0000ee0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0F 11044 bytes
SHA-256: 2f406bffa1d75657b2b62f2faab5a2f7e052acc630cdc024d261e9e119b65601
font_02_sfnt_off000113e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E2 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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