Malicious PDF — malware analysis report

Static analysis result for SHA-256 75e30ab74b6027fc…

MALICIOUS

PDF

84.2 KB Created: 2021-03-02 11:26:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 96f49fddf40b060f563d0a438f82051b SHA-1: decb3fd9353f4a2dba0005dc07ba519e04d886af SHA-256: 75e30ab74b6027fcb33a64de00a8c72dc5a084a373f79368fb1f15caa4c0ed5f
104 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as a phishing trojan. It contains embedded URLs, one of which, 'https://xezojetit.ru/strik?utm_term=french+texts+for+beginners+pdf', is likely part of a phishing or malware distribution scheme. The presence of a 'download button' heuristic further supports the attack pattern of luring users to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/strik?utm_term=french+texts+for+beginners+pdf
    • https://static.s123-cdn-static.com/uploads/4495973/normal_5fc7f8a24a2e8.pdf
    • https://zugixipenelir.weebly.com/uploads/1/3/4/5/134591811/mutig_palilelulu.pdf
    • http://rasezatoxefu.mygamesonline.org/how_much_does_one_medium_sweet_potato_weigh.pdf
    • https://pakidezosatujij.weebly.com/uploads/1/3/0/7/130775723/ditivepegovalib_boluvuxuw_walebemodusiwox_jerolej.pdf
    • http://xogefod.iblogger.org/printable_list_of_anti_inflammatory_foods.pdf
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/novusinofanet.pdf
    • https://cdn-cms.f-static.net/uploads/4456663/normal_600e05be51926.pdf
    • https://fifesijewawo.weebly.com/uploads/1/3/1/4/131412558/ripij.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kikexufan.epizy.com/51999946731.pdf
    • http://zepibugab.rf.gd/sociological_research_topics.pdf
    • https://s3.amazonaws.com/tadevewuju/48428359032.pdf
    • http://dajovomofoziso.rf.gd/cylindrical_and_spherical_coordinate_system.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6ea.bin
cadc65f85116ef23f096118dceba6404b6ab26f6e62a2137f5f88450b4a548cc
pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EA 5340 bytes
font_01_sfnt_off00010913.bin
64d47bed0ed450ec48b78fe5ed859715ddddb0abc11b074b5891caa24ed09901
pdf-font-stream PDF embedded font (sfnt) at offset 0x10913 11100 bytes
font_02_sfnt_off00012ef4.bin
e93acd332f5893643511f4cefd38969ad5c744ad1b08842a788b6be7d277dd15
pdf-font-stream PDF embedded font (sfnt) at offset 0x12EF4 16204 bytes