Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5e0911b6adceb5…

MALICIOUS

PDF

103.2 KB Created: 2021-03-19 09:12:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b5b9962b45f6a1f7ad82611762124cd1 SHA-1: 7f9f6c510bd53b3e39424240c37803e69958384a SHA-256: af5e0911b6adceb5d88c894417a82117e95a8bca6f42455bc2787083dfa0f59e
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://vilenefex.ru/aws?utm_term=what+is+the+concept+of+knowledge
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdf
    • http://vavazexowupex.medianewsonline.com/java_programming_notes_for_beginners.pdf
    • https://cdn.sqhk.co/badimoweba/c3haJhc/birha_vijay_lal_yadav.pdf
    • https://cdn.sqhk.co/vibisidumes/7Rjh5ic/gelibewefil.pdf
    • http://xumupizaxuto.scienceontheweb.net/bukivokasijadujugu.pdf
    • http://mutujejeturuduf.medianewsonline.com/neet_2020_biology_questions.pdf
    • http://tixaman.scienceontheweb.net/divine_mercy_shrine_cdo_mass_schedule.pdf
    • http://pivolirarorip.mypressonline.com/circle_of_fifths_worksheet.pdf
    • https://cdn.sqhk.co/sejejajoxej/Xv2jbia/elite_hockey_training_montreal.pdf
    • http://suwufexez.sportsontheweb.net/what_the_purpose_of_a_mortgage_deed_look_like.pdf
    • http://xasedogamif.mypressonline.com/5324278035.pdf
    • https://cdn.sqhk.co/lofopapenow/wMjhIgh/toca_kitchen_2_for_pc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fedorahosted.org/lohit
    • https://s3.amazonaws.com/salosibejodod/88911262301.pdf
    • https://uploads.strikinglycdn.com/files/9b20af1a-5a44-4f6f-8516-b40328d7dc58/how_to_find_cross_sectional_area_of_a_wire.pdf
    • https://s3.amazonaws.com/pogolo/gawetejuw.pdf
    • https://s3.amazonaws.com/nisoxow/1995_jeep_wrangler_rio_grande_owners_manual.pdf
    • https://s3.amazonaws.com/rezugekolaba/65484503676.pdf
    • https://s3.amazonaws.com/jazofi/auld_lang_syne_chords_key_of_d.pdf
    • https://uploads.strikinglycdn.com/files/c7f956a7-5bb7-4bbb-8fe8-7723f9211119/why_is_my_electric_furnace_not_turning_on.pdf
    • https://s3.amazonaws.com/jewizopukuni/barnet_planning_guide.pdf
    • https://s3.amazonaws.com/wuxupewu/99669085375.pdf
    • https://uploads.strikinglycdn.com/files/a8511bf3-82c7-45e2-92f2-3c5db7a938fe/93641128525.pdf
    • https://s3.amazonaws.com/lixasifasi/gewarurileliwe.pdf
    • https://s3.amazonaws.com/lezopobigeza/fetubaw.pdf
    • http://fekejuw.atwebpages.com/aitsl_standards_2020.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012166.bin
d1e612abaf585f9d884e08299984b750c21d95e35d26296626bc69e8f536b81a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12166 5276 bytes
font_01_sfnt_off0001336b.bin
bc029852cfb699938ff9f50937e6830635937e27557ca99d6ba192517511be98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1336B 12052 bytes
font_02_sfnt_off00015c81.bin
0e8deb070903fcaf2c9bd5d23d804997782f6169a13af898489188f385ed7ab9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x15C81 16372 bytes
font_03_sfnt_off00017285.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17285 4324 bytes
font_04_sfnt_off00018085.bin
8586906a99fe8eb333555292d1a7b58d97e3b146f4368a4412d9ac5282e1aa5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18085 3808 bytes

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