Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc22dd4760baf95c…

MALICIOUS

PDF

82.0 KB Created: 2021-04-19 17:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 856743f72dd6ad7b3022e11b44c050b0 SHA-1: 519949575b29aab81d1c190d506b052fa6a01b17 SHA-256: fc22dd4760baf95c4bc18ce4804d6e90756feb49566bb45f0ec52a7b43aee12a
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URI points to a suspicious domain, likely used for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=how+to+find+slope+with+two+point
    • https://cdn.sqhk.co/faroziwe/Rjhgiia/jugowavasapagepezafamufi.pdf
    • https://cdn.sqhk.co/dujagazatad/gifjcjb/tepozugeto.pdf
    • https://cdn.sqhk.co/wanowofimaz/jgSidie/brilliant_time_meaning_in_urdu.pdf
    • https://cdn.sqhk.co/redodadix/hotejjD/descargar_app_para_android_sin_play_store.pdf
    • http://bajesiradevo.getenjoyment.net/jesez.pdf
    • http://ledozikatiresev.scienceontheweb.net/wizard_sewing_machine_belt.pdf
    • https://cdn.sqhk.co/tobipamu/Xgeruhi/swing_sets_metal_heavy_duty.pdf
    • http://nexofozupugasi.mywebcommunity.org/56862825179.pdf
    • https://cdn.sqhk.co/nogugojuri/ijSghjf/juroperovoke.pdf
    • https://cdn.sqhk.co/kubabulukod/jgdJtgd/download_game_swipe_brick_breaker_the_blast_mod.pdf
    • http://femuxeririta.mygamesonline.org/beginner_fitness.pdf
    • https://cdn.sqhk.co/dizoketa/YCNTAJ2/160006613.pdf
    • https://cdn.sqhk.co/dizukenepu/MHOgija/pepunegimuxosojulopanek.pdf
    • https://cdn.sqhk.co/xotabuti/e1Ym8hh/wolf_desktop_wallpaper_4k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/vavale/29883073040.pdf
    • https://uploads.strikinglycdn.com/files/b5f1bf37-18b9-4f08-aeb8-c7b64130b066/how_to_do_a_real_estate_syndication.pdf
    • https://uploads.strikinglycdn.com/files/941216d8-9ae9-4077-99be-56ed8a10fc06/pozoxepagolenubivizanebuf.pdf
    • https://uploads.strikinglycdn.com/files/cfd9fea1-f5c8-441c-af4c-45f95730d4b4/form_of_verbs_list_a_to_z_with_urdu_meaning.pdf
    • https://uploads.strikinglycdn.com/files/d29682e4-2855-40c2-b5f6-166e045384af/modukinovin.pdf
    • https://uploads.strikinglycdn.com/files/74e9c3c6-95d6-4739-a3ec-650042884e6d/60310672300.pdf
    • https://s3.amazonaws.com/mexesazaxasa/why_is_my_airprint_printer_not_working.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f865.bin
489717063ae2ebf9be7a939dbd799129fa7f993fd0e34dc4bfcabc7d4da20ef1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF865 4664 bytes
font_01_sfnt_off0001084e.bin
54ab87834f25da302d810a3f11cb75edbf892c77a931f4c33df24a932cc99a21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1084E 10608 bytes
font_02_sfnt_off00012c8e.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C8E 4324 bytes

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