Malicious PDF — malware analysis report

Static analysis result for SHA-256 05b07f16de97cc07…

MALICIOUS

PDF

84.7 KB Created: 2021-03-18 23:25:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: c840c622d0fa357810b2c1c7d6395bc7 SHA-1: c450e65c17250ea02b7fda19549063caa383e502 SHA-256: 05b07f16de97cc076e1bca4e3583c38f506dd1ae03141aaf420934005af6eba5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://nipisod.ru/award?keyword=benzoin+condensation+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446395/normal_6015c0418eeaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453902/normal_60299fc6b7aa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446925/normal_5ffc7f3cddf1a.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/louisville_slugger_black_flame_pitching_machine_video.pdfIn PDF document text
    • http://majikok.mygamesonline.org/91717595442.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502563/normal_5fd33438626ae.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://s3.amazonaws.com/fajetufekejo/guvakuvusujudigivuteloz.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/tamil_monthly_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/filaturuw.pdfIn PDF document text
    • http://misosemarimo.rf.gd/77162790984.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/arena_rockwell_software_free_student.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/sovitarowifut.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/47366967310.pdfIn PDF document text
    • https://s3.amazonaws.com/tiduro/30029062361.pdfIn PDF document text
    • http://xizoxenefodage.epizy.com/arlanda_express_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/rockstar_arabesque_remix_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/dafovoxosusuxedivawi.pdfIn PDF document text
    • http://nokefibazapowem.rf.gd/brighthouse_financial_annuity_forms.pdfIn PDF document text
    • http://vedogitunenaki.rf.gd/dungeon_and_dragons_character_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/how_to_fix_singer_c4_error.pdfIn PDF document text
    • http://gelonixaj.rf.gd/the_taming_ofthe_shrew_act_2_scene_1.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB80 4908 bytes
SHA-256: e25b3e6c0cdcccd42e72ee1ac2a0d2f0b5facc7acb2040ecc32177bd48c01af7
font_01_sfnt_off0000fc46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC46 11208 bytes
SHA-256: 0f54a46b67dff078b197c8c06d6ba09e813c3be118d9bfb529a457af7f8ee339
font_02_sfnt_off000121f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121F3 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953
font_03_sfnt_off0001368d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1368D 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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