Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dde237d1ef75c59…

MALICIOUS

PDF

69.7 KB Created: 2020-11-29 06:02:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: deae1f8dfeec5a709374b14bb0fbd113 SHA-1: 79a0b3f215464233e405595267575e61c974733b SHA-256: 2dde237d1ef75c59ca20997902808d6575d7fcd22f7dffc564ed212bc810439e
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 'https://gettraff.ru/123?utm_term=qui+que+dont+french'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious, supporting the phishing or malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/123?utm_term=qui+que+dont+french
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/posufij/36700542426.pdf
    • https://s3.amazonaws.com/vazisi/google_sheets_org_chart.pdf
    • https://s3.amazonaws.com/guxosa/ryco_oil_filter_application_guide.pdf
    • https://s3.amazonaws.com/zunaporam/olympus_camera_manual_on_computer.pdf
    • https://s3.amazonaws.com/gomakobez/99820102470.pdf
    • https://uploads.strikinglycdn.com/files/ad33b89f-477e-4bd2-97c2-47e241d9cb47/stellaris_beginners_guide_2.3.pdf
    • https://s3.amazonaws.com/mupukesunobaga/nupovagadokokamig.pdf
    • https://s3.amazonaws.com/bojafazes/boletin_informativo_definicion_y_caracteristicas.pdf
    • https://s3.amazonaws.com/donarepemi/jugumusezatalogazasapufe.pdf
    • https://uploads.strikinglycdn.com/files/8358ad00-e83b-4fe6-8774-feb8ad23dd41/18110229997.pdf
    • https://uploads.strikinglycdn.com/files/c51a1ddf-ca5b-40b4-9547-af09bf936b23/busybox_pro_apk_cracked.pdf
    • https://s3.amazonaws.com/vatakefojunib/duxataruw.pdf
    • https://s3.amazonaws.com/kasuwevovog/the_hunger_artist_kafka.pdf
    • https://s3.amazonaws.com/nitidadufetenu/28273657810.pdf
    • https://uploads.strikinglycdn.com/files/2c6ef73e-f50b-45af-a6c8-0d2863ab9bd7/palepubopawif.pdf
    • https://uploads.strikinglycdn.com/files/47bbc2a6-0647-477d-9d46-8eff4db9df9f/kisedudakuromilevarab.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_off0000d15a.bin
56704c0f7cec879c40535936c42b5d9b9b3de7862d1b306d8b27d507d39f5d7f
pdf-font-stream PDF embedded font (sfnt) at offset 0xD15A 4876 bytes
font_01_sfnt_off0000e1f2.bin
4d9f4dff23ae6d76bda2a8deec156ddb5ecae689bf89a830d336d73b1200b6ef
pdf-font-stream PDF embedded font (sfnt) at offset 0xE1F2 12100 bytes