Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf0fa290c6cd261…

MALICIOUS

PDF

73.5 KB Created: 2021-03-11 21:42:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 191391a59a8e0d7c9b13e10da726787b SHA-1: 2c0a4f991cec3d15539156c893aa093721421cc1 SHA-256: fdf0fa290c6cd26188cd00e26ef5534356053722e7145720f30936b081dad6d2
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An embedded URI points to 'https://zajinet.ru/wix?keyword=oblivion+strategy+guide', suggesting a phishing or credential harvesting attempt disguised as a strategy guide. No scripts were extracted, but the PDF structure and external URL indicate a likely attempt to deliver a secondary payload or redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://zajinet.ru/wix?keyword=oblivion+strategy+guide
    • https://cdn.sqhk.co/kavejufa/tA0hchj/vefofakowemosoxiro.pdf
    • http://rowaxamapitowej.getenjoyment.net/47821376500.pdf
    • https://cdn.sqhk.co/girewobo/gdidx4V/dolukozopar.pdf
    • https://bupiwuzisulim.weebly.com/uploads/1/3/0/8/130874125/39b06e21.pdf
    • https://cdn-cms.f-static.net/uploads/4484359/normal_6049afc18610f.pdf
    • https://vizexetu.weebly.com/uploads/1/3/4/8/134864552/vafiwore_fefit.pdf
    • https://cdn.sqhk.co/kixikeli/gghbhiR/aftermarket_car_stereo_android_auto.pdf
    • https://cdn-cms.f-static.net/uploads/4448536/normal_6032c4eff0de2.pdf
    • http://xixofafil.medianewsonline.com/how_to_apply_self_stick_vinyl_wall_base.pdf
    • https://static.s123-cdn-static.com/uploads/4490274/normal_5fc95443a6afa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bidivo/kowawufowudetetejumop.pdf
    • https://21a67f6d-2aea-439f-a910-ed4feb6be009.filesusr.com/ugd/173616_1c99b22fb76043b186c9706f97162369.pdf?index=true
    • http://jokubamobivavum.onlinewebshop.net/moto_g6_phone_case.pdf
    • https://6d251753-49d0-4f5b-a278-10ed1cacc9d0.filesusr.com/ugd/5c139a_3eba599d414e44b5be2ed5ac32b13618.pdf?index=true
    • https://s3.amazonaws.com/tosevud/alluvium_formation_lithology.pdf
    • https://s3.amazonaws.com/wiwuxot/how_to_hook_up_dvd_player_to_tv_with_converter_box.pdf
    • http://rigidafavubo.myartsonline.com/wc3_frozen_throne_cheats.pdf
    • https://b70645e9-42d7-44c6-80f2-f165c8819e8d.filesusr.com/ugd/3f1130_3e3cd6bbab8641239685d96254c1570d.pdf?index=true
    • https://128fc002-9ed4-4a8f-9a6b-83b43563a9ed.filesusr.com/ugd/6812d7_a07d0fba9a964f55a748eb73a83527a8.pdf?index=true
    • https://91ca87c2-c493-4616-adaa-fbcec45394e1.filesusr.com/ugd/6116da_a672bf415d6e4fafb636442e93ba8345.pdf?index=true
    • https://s3.amazonaws.com/lanaladu/2018_chevrolet_equinox_ls_owners_manual.pdf
    • https://s3.amazonaws.com/dukajevo/maradona_songs_free.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_off0000e372.bin
8610a3deaccbfe1746111525647f3e59f48e43f031107d7be52bf51d0577b39b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE372 5320 bytes
font_01_sfnt_off0000f599.bin
b3aac9bb1d38748821bff3c40a3c4ddbc6fceb22dd1bd99a0f404a434c5d8c00		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF599 10452 bytes

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