Malicious PDF — malware analysis report

Static analysis result for SHA-256 18d981c81fe55d5c…

MALICIOUS

PDF

88.1 KB Created: 2020-12-28 18:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: abae33a1b09de70e7c3df31a1d65b8ba SHA-1: d56bda5ae3c7aa6b3042f5947c51121092b0ee17 SHA-256: 18d981c81fe55d5c2ce66799575e3a227042c00ad9d4da0a723609967dc0a171
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'gettraff.ru', which is associated with phishing and malware distribution. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to 'aura legend apk hack'. The ML classifier also strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of a malicious URL within a PDF document strongly indicates an attempt to trick the user into visiting a harmful site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://gettraff.ru/aws?utm_term=aura+legend+apk+hack In PDF document text
    • https://cdn.sqhk.co/wotudasigeb/ogj6QxD/4953941000.pdfIn PDF document text
    • https://cdn.sqhk.co/nebuwaxisiw/uidjihh/elemental_dungeon_apk_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487918/normal_5fd33f863f95c.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/70640dbd-df24-4be4-8bc8-e75b129e775a/22990466334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f631ba7-8585-47cb-9369-a022d607ec9a/hermano_MFC_9120cn_toner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2275faeb-c358-4fa0-851b-2a6a8ebc40a4/xirolururewadaxinow.pdfIn PDF document text
    • https://s3.amazonaws.com/genijusemu/catholic_mass_parts_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/civilization_6_early_game_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354cad54-b537-4581-bd03-a120e1cc3dac/mejuzibed.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/22350932210.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/44625599669.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/54920929752.pdfIn PDF document text
    • https://s3.amazonaws.com/gizonukorad/oracle_ebs_forms_shortcut_keys.pdfIn PDF document text
    • https://s3.amazonaws.com/venunamazozuzo/xukemezulewu.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/xopajekiruboralomipukakap.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e9ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AC 2944 bytes
SHA-256: 635d3469a68f96c8ae197b6f8d47e09235b5c1b009232adbdd6bd46bbfe55fb0
font_01_sfnt_off0000f436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF436 4852 bytes
SHA-256: c505069ad56dc752c22376856cdaedae3d56e8bc3f1fe13c3e02be409486e437
font_02_sfnt_off0001049f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1049F 11088 bytes
SHA-256: df6f2ad761aa09d34f1e2fb3e27f6dd226a0762fa319d9090782de844fb8372f
font_03_sfnt_off00012aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AEC 17412 bytes
SHA-256: 837a69ffaa0b7285313ef96e7684bbec83160867bf765eb016464856b58cc2ee
font_04_sfnt_off000144ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144AB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

Open this report in the interactive analyzer, or submit your own file for analysis.