Malicious PDF — malware analysis report

Static analysis result for SHA-256 2712f7f09a474a27…

MALICIOUS

PDF

85.8 KB Created: 2021-02-16 05:27:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a9d7263d8df7e8ae082db982a8391ec0 SHA-1: c0647aa216393f625b1351b7fbbba281c6f7b8aa SHA-256: 2712f7f09a474a27ccd18808b92dc5c8a4790699658641d58d0d9a8826dfe3cf
126 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one specifically appearing as a search result for "meade autostar software for mac". This suggests a phishing or social engineering attempt to direct users to a malicious site. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

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://baarspo.ru/wb?keyword=meade%20autostar%20software%20for%20mac PDF link annotation
    • http://kojewotezigu.iblogger.org/activesheet._showalldata_if_filtered.pdfIn PDF document text
    • https://pulimogub.weebly.com/uploads/1/3/4/3/134312020/gosuto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449192/normal_60186c0c715a1.pdfIn PDF document text
    • http://everydayy.fun/mobile_legends_emblem_guidezdebo.pdfIn PDF document text
    • http://vemasujananexu.22web.org/14449286965.pdfIn PDF document text
    • http://hd-cam-mirror-up1.club/rimopakowagirjjygm.pdfIn PDF document text
    • https://nevedaroxizewav.weebly.com/uploads/1/3/4/5/134592578/suvetijivefibom.pdfIn PDF document text
    • http://amandeepsadyora.com/rome_barbarian_invasion_best_factionm2ans.pdfIn PDF document text
    • https://zenamuvevabun.weebly.com/uploads/1/3/1/4/131453902/nulutakusuni_madotamafemiget_vafokonimenoxet_sosen.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://fukutinupamebo.rf.gd/96398066391.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/nejawonu.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/always_on_display_samsung_s9_plus_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bomifabipi/kadajesozazen.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_off00010366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10366 4960 bytes
SHA-256: 2af9f162c999dd6e9545eaf1e98d3305e156455fa9fb6295f3410f2656a88f6f
font_01_sfnt_off00011455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11455 11672 bytes
SHA-256: 650e7b0c60a4f32ec07117d1513570858261a50628793966fc30c99c27ddd746
font_02_sfnt_off00013c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C36 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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