Malicious PDF — malware analysis report

Static analysis result for SHA-256 fec1d7b0ebfaade8…

MALICIOUS

PDF

75.2 KB Created: 2021-03-07 07:40:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a003364e135926f40db9548f15965c3 SHA-1: 711f27bcda87aeb62fca59de8fb8c0abfd9cf2b4 SHA-256: fec1d7b0ebfaade89a0b852ddba7a6c0a9a07581a46100973f173706258e05dc
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 likely part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text related to 'death valley national park landforms' and the authoring application 'wkhtmltopdf', suggesting a lure to a malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://midufefew.ru/wix?keyword=death+valley+national+park+landforms
    • https://cdn-cms.f-static.net/uploads/4468540/normal_5fd2c2e8c5376.pdf
    • http://gosejoligezo.iblogger.org/mbd_english_guide_10th_class_pseb.pdf
    • http://xepidenad.scienceontheweb.net/what_is_a_trial_lawyer_salary.pdf
    • https://static.s123-cdn-static.com/uploads/4471682/normal_60025a1f100c6.pdf
    • http://benovezim.22web.org/46666419488.pdf
    • http://zaxevef.getenjoyment.net/a_streetcar_named_desire_sparknotes_scene_6.pdf
    • http://giwitap.getenjoyment.net/interior_design_software_free_for_pc.pdf
    • https://cdn-cms.f-static.net/uploads/4426820/normal_5fe7504d84e90.pdf
    • http://beririka.scienceontheweb.net/the_hobbit_concept_art_book.pdf
    • http://sanalunuguto.22web.org/37928478065.pdf
    • http://zeruxejobimal.mywebcommunity.org/79322068254.pdf
    • https://cdn-cms.f-static.net/uploads/4366958/normal_5fdb1663f1a75.pdf
    • http://famozosivupiwij.sportsontheweb.net/19315845162.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vipezirovopegem.epizy.com/where_can_i_start_reading_spider-man.pdf
    • http://xawezukazekexi.epizy.com/buku_undang-_undang_dasar_1945_amandemen.pdf
    • https://s3.amazonaws.com/gidibesuxi/pilujiw.pdf
    • https://s3.amazonaws.com/bomifabipi/36271183415.pdf
    • https://s3.amazonaws.com/zamuriza/92262275003.pdf
    • https://s3.amazonaws.com/dixaleko/nurojevefu.pdf
    • http://sitesiku.rf.gd/sabetejemerefixebalitipew.pdf
    • http://movozenumoz.epizy.com/24229489978.pdf
    • https://s3.amazonaws.com/vuforewebub/niwefawubupati.pdf
    • http://vonopexurobuma.epizy.com/oxonium_ion_lewis_formel.pdf
    • http://tirinusodobo.epizy.com/swann_8_channel_1080p_1tb_dvr_review.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_off0000e79d.bin
e844416b3201ac8a130f5df840db0097b2600a65d27353ad55144a2107c9007f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE79D 5508 bytes
font_01_sfnt_off0000fa44.bin
198465cf1914343258265edf4357ed193599de591583349ffcb9b8fee003fe44
pdf-font-stream PDF embedded font (sfnt) at offset 0xFA44 10808 bytes