Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b39b153d0dbe2b5…

MALICIOUS

PDF

73.1 KB Created: 2021-02-20 23:38:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 199ef77f9ad9adbb7e4bfa143afde01d SHA-1: 66da26dda02bafcee7074f521d7cda24d176218c SHA-256: 9b39b153d0dbe2b58fdc540323eae4b509e992ed3660d3ff45396d8fcca2f88f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://seumenha.ru/wix?keyword=avital+4113+installation+guide PDF link annotation
    • http://beamorem.com/25230241511i4kqk.pdfIn PDF document text
    • https://cdn.sqhk.co/bapisolel/nQGvhjr/22313595170.pdfIn PDF document text
    • https://lotunesu.weebly.com/uploads/1/3/0/9/130969364/60691bc608.pdfIn PDF document text
    • http://photoforce.ru/varutosazilaxazigutedzzbol.pdfIn PDF document text
    • https://tupefumezamubew.weebly.com/uploads/1/3/0/8/130874634/rewiko.pdfIn PDF document text
    • https://cdn.sqhk.co/rasirise/jfzLlxo/world_map_offline.pdfIn PDF document text
    • https://pukokisawar.weebly.com/uploads/1/3/4/7/134749025/tekuk.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/H2Bjcid/leather_pants_zara_woman.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/titugome/ansible_jinja_template.pdfIn PDF document text
    • https://s3.amazonaws.com/pojikovewijeja/62789878777.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/ludilumizezinox.pdfIn PDF document text
    • https://s3.amazonaws.com/gurupixabogivaz/afda_johannesburg_application_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/fexuror/bifefupavoduzuzuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/38460041053.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/afreen_tera_chehra_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/gekixadonuru/annabelle_creation_full_movie_cinemavilla_english.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_off0000d611.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD611 5132 bytes
SHA-256: e874bc3c735ad8d8792db9381269f44165efd7a476e053db7cec53a34513e661
font_01_sfnt_off0000e7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A4 9788 bytes
SHA-256: 0f8ca92394587df8e57a12e956d6aa113b583613869a4f0f64d585cbac7f1dc4
font_02_sfnt_off0001092f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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