Malicious PDF — malware analysis report

Static analysis result for SHA-256 2313c01564b68972…

MALICIOUS

PDF

99.0 KB Created: 2021-02-27 09:57:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: b575135d6aaf1eeb0dbce46c54511b2b SHA-1: c9d697ad22adbc27a0c5b20309389ea667050059 SHA-256: 2313c01564b68972a83f6fdced71042cd1dc2bcbc380582e7775d1849ca2f9f6
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically identified as a phishing trojan. It contains an embedded URI pointing to 'golowaki.ru', which is likely part of a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, aligning with spearphishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/wix?keyword=writing+equations+from+tables+worksheet+kuta PDF link annotation
    • http://magnetfix.store/mogozufesibazinawidad65dui.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/fhbicia/buxat.pdfIn PDF document text
    • https://cdn.sqhk.co/wasuxuletiz/ijhUEpy/13969569802.pdfIn PDF document text
    • https://cdn.sqhk.co/sejujona/aROhglX/hymns_of_praise_and_thanksgiving_with_lyrics.pdfIn PDF document text
    • https://cdn.sqhk.co/definuseju/ShbewSo/9536441844.pdfIn PDF document text
    • http://successinyourlif.website/android_alpha_animation_on_viewlfbej.pdfIn PDF document text
    • http://creditreportfast.info/graco_sit_and_stand_double_stroller_parts8se6e.pdfIn PDF document text
    • https://cdn.sqhk.co/jutusaxibu/cYibwTf/galaxy_attack_alien_shooter_gift_codes_2020.pdfIn PDF document text
    • http://fortysgjdk.fun/tamepukezufulojemuxuzopih4afz.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://s3.amazonaws.com/purixifusipelid/16050552848.pdfIn PDF document text
    • http://fukafuxegexej.rf.gd/26374952945.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/91317178522.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/73333205073.pdfIn PDF document text
    • http://loxosufodu.epizy.com/anydesk_remote_pc_mac_control_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/bulad.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/fopebofepupijesogumilu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13897 5496 bytes
SHA-256: a25a505fff25f135d23e56f4f89b40e48ffb02ba9b55a55be6cfa8ed77cb1ad1
font_01_sfnt_off00014b32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14B32 10996 bytes
SHA-256: 43ea1f912858c43f2909b1abf8170103fdf3b03bc619857f36a85474ce448023
font_02_sfnt_off00017053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17053 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

Open this report in the interactive analyzer, or submit your own file for analysis.