Malicious PDF — malware analysis report

Static analysis result for SHA-256 127977201a8f0b4e…

MALICIOUS

PDF

79.9 KB Created: 2021-02-16 02:26:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d8f57346ade09337cab0cc0622d3268 SHA-1: d870137d665cd19a18a44553b00031facfb219c1 SHA-256: 127977201a8f0b4ed89e449d6b700bf8ea20d561ddc5a3752b1e44a6b4b0ea33
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF format and the presence of embedded URIs suggest potential for exploiting PDF vulnerabilities or social engineering tactics to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/strik?utm_term=smokey+mountain+grill+brisket
    • http://dazixetenulega.22web.org/73034377577.pdf
    • https://static.s123-cdn-static.com/uploads/4450355/normal_5ff1054b5bd85.pdf
    • http://dofolamemudowu.22web.org/guia_de_ejercicios_fisica_cbc.pdf
    • https://cdn-cms.f-static.net/uploads/4413370/normal_6013c08fe4978.pdf
    • https://cdn-cms.f-static.net/uploads/4485012/normal_6012512c76950.pdf
    • https://cdn-cms.f-static.net/uploads/4415944/normal_600d11a480e2e.pdf
    • http://dawuxapi.iblogger.org/zenivadirojafinuk.pdf
    • https://cdn-cms.f-static.net/uploads/4446151/normal_6017c6f92f10b.pdf
    • https://cdn-cms.f-static.net/uploads/4474465/normal_5fd0d507d7e75.pdf
    • https://static.s123-cdn-static.com/uploads/4375518/normal_5fdec2ded3761.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://fawivemepogu.epizy.com/cpns_bengkulu_selatan.pdf
    • http://patazave.epizy.com/nokia_4g_android_phone_under_7000.pdf
    • https://s3.amazonaws.com/wopari/fepoteja.pdf
    • https://s3.amazonaws.com/fomudebipefasu/soundcloud_app_for_mac_free.pdf
    • http://jiwenufaxo.epizy.com/e._i_telephone_reporting_number.pdf
    • http://wumekupewug.rf.gd/helena_blavatsky_books.pdf
    • http://zuruvipusagevi.epizy.com/air_pollution_research_paper.pdf
    • http://numivonef.rf.gd/tukewunoxegolex.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed98.bin
6373744d7c1397eebbeeb5812b89aaf8b136e0d5f77d63434025a348700b629e
pdf-font-stream PDF embedded font (sfnt) at offset 0xED98 5296 bytes
font_01_sfnt_off0000ff8b.bin
bec38e6cc27c63cd78a50018f7b2eda2948419c2f98fbdfabe23d0bcba039d29
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8B 10864 bytes
font_02_sfnt_off00012403.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0x12403 4324 bytes