Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f69a4122e31cb5…

MALICIOUS

PDF

74.6 KB Created: 2021-02-13 17:41:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e8db2a4f180ba28e5be8709cc2c7a5ec SHA-1: d99b37d438a08c02b5623657224e24ccdfc2b4e8 SHA-256: a8f69a4122e31cb5e70fba89d078a51a748511d1ee6220aa4aeda4b67f428692
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one pointing to a suspicious domain ('maypoin.ru') that is likely used for phishing or malware distribution. The PDF structure also suggests it's part of a link farm, further supporting a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://maypoin.ru/wix?keyword=fisher+price+race+track+recall PDF link annotation
    • http://paradusafe.iblogger.org/lipokepebowosorarotob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469643/normal_5ffb8c41c43b6.pdfIn PDF document text
    • http://razvivatel.blog/my_crush_hits_meaning_in_malayalamdxiu7.pdfIn PDF document text
    • https://xefapakofaguwa.weebly.com/uploads/1/3/1/1/131164324/b96a050a17.pdfIn PDF document text
    • http://tofuvuniz.iblogger.org/sbi_personal_loan_form_16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_6017ce19695d9.pdfIn PDF document text
    • http://sqrab.top/3861122242575k0l.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
    • http://gezixerigalejeb.rf.gd/debussy_1st_arabesque_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/naxozelozude/teduboxesa.pdfIn PDF document text
    • http://diwejijozijigez.rf.gd/kerala_floods_2018_report.pdfIn PDF document text
    • http://feselipalez.epizy.com/corey_davis_injury_report.pdfIn PDF document text
    • https://s3.amazonaws.com/winumigutam/extreme_copy_pro_full_version_terbaru.pdfIn PDF document text
    • http://zikinevubebera.epizy.com/geometry_polygons_worksheet_answer_key.pdfIn PDF document text
    • http://vapilazomenotak.rf.gd/msi_afterburner_guide_overclock.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_off0000dc66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC66 4612 bytes
SHA-256: bd3a318c679c9ea9e134a9ba05e7f792e24588fcd9016972015c7501444e63fb
font_01_sfnt_off0000ec14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC14 10316 bytes
SHA-256: e37c6ac05f607b07e3f9988babf07d5d16984132d9e3d289243e0054ca63242c
font_02_sfnt_off00010f6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F6B 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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