Malicious PDF — malware analysis report

Static analysis result for SHA-256 22a3af9b52ee7a95…

MALICIOUS

PDF

175.0 KB Created: 2021-03-31 14:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: ea0224f13b20119dd4f1443ac1dee411 SHA-1: e2af6b16f8ffdebc67c62abf67c13c0192e5a132 SHA-256: 22a3af9b52ee7a958eec81d4950facef3f1ef818a2c9a6d2a1daacf0fb8c8165
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of an external URI in the document body, combined with the high confidence detection scores, points to a phishing lure designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9720

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://dugedepap.ru/award?keyword=aristotle+rhetoric+book+pdf PDF link annotation
    • http://bristol-yalta.run/46861429589h1md2.pdfIn PDF document text
    • http://wssummer.space/nabujorevazamudujinhpsju.pdfIn PDF document text
    • https://cdn.sqhk.co/pafatewodoju/ayq8rfe/b_r_i_d_e_g_words.pdfIn PDF document text
    • http://filmera.ru/cestina_expresslxz7z.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/ghogiji/sapubasatelalixaxifokopos.pdfIn PDF document text
    • https://cdn.sqhk.co/jabosuve/4ahjhja/nora_fatehi_new_song_pyar_do_pyar_lo.pdfIn PDF document text
    • http://nout-prokat.website/bowovewedenadaklp23x.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://a52dd608-e7dd-4d50-8005-e0fd7a3896b4.filesusr.com/ugd/43d2fc_0442d617418146518c3f0c48a3b5cb3e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/widofafane/sutulubujozuwodoselo.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/go_to_facebook.com_login_identify_and_follow_the_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/can_you_put_dehydrator_trays_in_the_dishwasher.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/9065933156.pdfIn PDF document text
    • https://786c536d-253b-4a15-94df-129c4693a223.filesusr.com/ugd/1fc311_e2100f049a6f435b99fc92555129a8a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/jikuresutufakulupudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af10aa91-adbd-458e-a9ae-d5c0b4bc111c/mental_status_assessment_template.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/50926061124.pdfIn PDF document text
    • https://s3.amazonaws.com/bajapovogam/vumiwekefonagaw.pdfIn PDF document text
    • https://1c8fadd7-09eb-4d2b-9d42-8e747ba5ce52.filesusr.com/ugd/60625b_a338ce80f0664801997f978d0d9524e0.pdf?index=trueIn PDF document text
    • https://aa5f33e9-793b-4807-a257-9eac84d314d0.filesusr.com/ugd/aa57b2_2ece23e00b3e41b88412d0890b033387.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b072c8-1c0c-4679-b6e9-9b0cdf7a3ade/gijeginimunebemule.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4920fd37-5485-4b61-accb-e2e8b150da9c/how_to_test_blue_yeti_mic.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/cocoa_beach_fl_surf_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/zumoj.pdfIn 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_off00025176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25176 4908 bytes
SHA-256: e28c1a2013f83ef538eee25f793c0a35ed28208c3c5365fd49a60f0deec39566
font_01_sfnt_off0002622d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2622D 16544 bytes
SHA-256: c4c88ad7b69e0ad231c2a74e8e4efcdb03cd7f9b40a67770289c91abe35fb0f5
font_02_sfnt_off0002929f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2929F 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7
font_03_sfnt_off0002a737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A737 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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