Malicious PDF — malware analysis report

Static analysis result for SHA-256 d32bc3d06173d2a3…

MALICIOUS

PDF

125.9 KB Created: 2021-02-24 02:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ecabfc3d1a90ca26251da1a4b88c31a1 SHA-1: e16ca3283e2d65d41ee91386a618127aba704ab9 SHA-256: d32bc3d06173d2a30bff4eba410fd5e7d5bddbead808bf8805150d11fb9f4a6e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with several pointing to disposable hosting or potentially malicious domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, appears to be a lure related to drawing tutorials, which is likely a pretext for the embedded malicious links.

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
  • 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://jottigo.ru/aws?utm_term=how+to+draw+general+grievous+face PDF link annotation
    • https://fezagigix.weebly.com/uploads/1/3/0/8/130813643/ruwufulonafa_sexizoz_mibigofofape.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413975/normal_602adcbb47502.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457330/normal_602ff8d4c6ced.pdfIn PDF document text
    • http://tubipiguposazi.22web.org/which_is_the_best_over_the_range_microwave_to_buy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447878/normal_5ffd390f273ef.pdfIn PDF document text
    • https://ginimowawogob.weebly.com/uploads/1/3/4/7/134753870/460607.pdfIn PDF document text
    • http://babarogumo.iblogger.org/how_to_fix_fitbit_charge_hr_band.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fofodas.rf.gd/chewy_american_journey_salmon_and_sweet_potato.pdfIn PDF document text
    • http://kalilom.epizy.com/greater_noida_map.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/46995232399.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/kevolisoxedabukiremetup.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/marvel_cinematic_universe_comics_free.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_off0001b34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B34A 5304 bytes
SHA-256: 4f693919bee009e1e913bd0a62bdae16b63ee405ff1d9adbe1890cc3cac4cb04
font_01_sfnt_off0001c57f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C57F 10952 bytes
SHA-256: ddabc6a20d306c93ae3545cbba62ccc43bb24f4dab35543ad64d795bdd694e72

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