Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1ec3b96526188d1…

MALICIOUS

PDF

82.6 KB Created: 2021-06-02 19:39:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 73bbb2ccbb9e14ef1269782f65e57194 SHA-1: edd0496c1a4383a508dfa3068e49d1fba8c068ee SHA-256: f1ec3b96526188d10b9b4a93ee929cdd68e02c148599495d7022ffd07a2549a7
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://philabc.ru/pbw?utm_term=does+nate+love+annalise PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366622/normal_5ff6001cbab7f.pdfIn PDF document text
    • https://xowakuvum.weebly.com/uploads/1/3/7/5/137505149/bajunuxo.pdfIn PDF document text
    • https://pekosorevonoxa.weebly.com/uploads/1/3/0/7/130739373/wimidufilabagekisi.pdfIn PDF document text
    • https://konegodifoxud.weebly.com/uploads/1/3/1/3/131380175/1887265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417519/normal_603c71bda4b32.pdfIn PDF document text
    • https://rojanekawuveruj.weebly.com/uploads/1/3/1/3/131380666/4107841.pdfIn PDF document text
    • https://kazowotamije.weebly.com/uploads/1/3/4/0/134012594/1e5d8.pdfIn PDF document text
    • https://rixemeja.weebly.com/uploads/1/3/4/7/134711448/gazegowomofibagava.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482023/normal_603921135fe87.pdfIn PDF document text
    • https://pikivazok.weebly.com/uploads/1/3/0/8/130873779/e227a65f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368235/normal_5fc678731643f.pdfIn PDF document text
    • https://nelibijejukeli.weebly.com/uploads/1/3/1/4/131437261/mufirazevulowoxide.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mapijakemifo.pbworks.com/f/vajexuriluzejexipuka.pdfIn PDF document text
    • http://poxanoralanu.pbworks.com/f/tumad.pdfIn PDF document text
    • http://liwuvedesisu.pbworks.com/f/10469072138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1dededb-af29-4dbb-97c4-7910ee1e28fa/diary_of_a_wimpy_kid_2010_full_movie_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/10fd8b27-1008-4217-b91e-91fe0b014886/exercice_accord_sujet_verbe_ce1_gratuit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d15b22e7-6348-4eb9-a423-28b63a03a2ef/seven_deadly_sins_season_1_english_dubbed_free_download.pdfIn PDF document text
    • http://rorazokazog.pbworks.com/f/m_images_hd_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1c2975f-4e65-4cd5-8dc7-3d308b559599/what_makes_up_an_alkaline_diet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b90048a0-6d2e-4bb8-85cf-0fdd0f3a7f01/fopijerijojokitibolele.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_off00010834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10834 4644 bytes
SHA-256: cbeb0fbff55c81bf2472e82037b1485a077c84c7ce844b18aa72579e6c2914e6
font_01_sfnt_off0001181c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1181C 11012 bytes
SHA-256: 6124cfd738b4fd5b1b67fe829cd27d421e26486f6d48332a3d7d69177b1278cf

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