Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e76f45194c12cd…

MALICIOUS

PDF

79.7 KB Created: 2021-03-05 14:41:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 1d373f3143ef857d30b01a9576d1f6bf SHA-1: c9dcc66af10b70172af07b88177e24d8d6dcbc90 SHA-256: 29e76f45194c12cd56d8fbae6e3dbb290c3192e3772b8a3481e007554d195b2c
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains multiple external links, some pointing to disposable hosting, and a deceptive download button lure. The document body, though heavily obfuscated, suggests a lure related to downloading an 'apk'. The presence of external URIs and the overall structure strongly suggest an attempt to trick the user into downloading and executing a malicious application.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wix?keyword=dish+anywhere+apk PDF link annotation
    • https://cdn.sqhk.co/loganidob/hhwhfNX/kadofixejosonalolulom.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/jb1ijgi/23335145220.pdfIn PDF document text
    • http://fibisazorowax.mypressonline.com/zobiruxawus.pdfIn PDF document text
    • https://cdn.sqhk.co/jofijoju/dkMief8/fewagipab.pdfIn PDF document text
    • https://cdn.sqhk.co/remozemot/hiPhjjh/saber_el_saldo_de_mi_tarjeta_alimentaria.pdfIn PDF document text
    • https://cdn.sqhk.co/xakalodesi/cXighge/hello_neighbor_hide_seek_apk_android.pdfIn PDF document text
    • https://cdn.sqhk.co/nupozifulija/Cxinpha/amazon_canada_mens_golf_clubs.pdfIn PDF document text
    • https://cdn.sqhk.co/xeposetuge/Ucpihgb/bujefovanujoxegumonu.pdfIn PDF document text
    • http://tifoxikutawe.sportsontheweb.net/guwebujokuzaxerupevuxit.pdfIn PDF document text
    • http://powajaxib.medianewsonline.com/epson_v370_perfection_flatbed_scanner_argos.pdfIn PDF document text
    • https://cdn.sqhk.co/miloxuso/t2xXCgi/46998777818.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/eniIiju/nopokunutizulexemow.pdfIn PDF document text
    • https://cdn.sqhk.co/gifidupuzuv/gc2h17Q/battleclaw_season_2_episode_27.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegunapajom.epizy.com/47382277502.pdfIn PDF document text
    • http://fuvuvadut.onlinewebshop.net/bagepesav.pdfIn PDF document text
    • http://befojarariwowab.epizy.com/android_10_time.pdfIn PDF document text
    • http://mudefikireneb.rf.gd/95313444718.pdfIn PDF document text
    • http://zokoximu.rf.gd/kotubuxipaxaxipo.pdfIn PDF document text
    • http://nukuzuxowilaz.epizy.com/tlv_acgih_2017.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD18 5132 bytes
SHA-256: 3db8f43477aec71ddfccfcc33b99058ec40d5bc1810c86f990723ac03ce3f9a9
font_01_sfnt_off00010ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA4 10320 bytes
SHA-256: 2cabb660e3800dd2bc88a96e4a746e13d551f9aff642af9af11622ff548d96b0

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