Malicious PDF — malware analysis report

Static analysis result for SHA-256 a68065a0d4eab484…

MALICIOUS

PDF

73.2 KB Created: 2021-06-01 23:05:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c89f928ff4e79e0a523621841cee86ed SHA-1: 53cedff9f944e1a713a3045e7ad21fb7192c57da SHA-256: a68065a0d4eab484d2f74620824bfeab741e21c69c87b0b0afc664738841e951
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 0.9996

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://garglob.ru/pbw?utm_term=codashop+pro+apk+ff+gratis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4426409/normal_602885620a2ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454821/normal_60391a3eec69f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495837/normal_606c7ac720118.pdfIn PDF document text
    • https://bagerukuvimi.weebly.com/uploads/1/3/2/8/132815916/4849132.pdfIn PDF document text
    • https://nisudine.weebly.com/uploads/1/3/1/4/131454656/9566b3c53249.pdfIn PDF document text
    • https://lugekovatisemo.weebly.com/uploads/1/3/5/3/135337030/desujijumenika_fotokejip_fexopoki.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485800/normal_60034c515112f.pdfIn PDF document text
    • https://daxugukixirujin.weebly.com/uploads/1/3/4/7/134739014/7901607.pdfIn PDF document text
    • https://gakubuzavesow.weebly.com/uploads/1/3/0/8/130813888/ponamuxawiw_wunupatawar_gogubogelef_rikaxafodudon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7eec2938-3670-4c21-81a2-e753b69f11fa/favorisorituvebetilupu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88c5afbe-725e-4bdc-8c65-db8406699358/65898673737.pdfIn PDF document text
    • http://ravowibosu.pbworks.com/w/file/fetch/144476712/how_to_open_samsung_tablet_sm-t110.pdfIn PDF document text
    • http://tazijebep.pbworks.com/f/best_buy_return_policy_without_receipt_gift.pdfIn PDF document text
    • http://tagexoba.pbworks.com/f/devipefe.pdfIn PDF document text
    • http://fufitiruw.pbworks.com/w/file/fetch/144426003/rozijinunigivoraridox.pdfIn PDF document text
    • http://gifavipa.pbworks.com/w/file/fetch/144418224/dupojojelipasu.pdfIn PDF document text
    • http://xuresasadox.pbworks.com/f/are_there_any_movies_about_hades_and_persephone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59cb412e-4f2a-4b0e-9c5f-392ec3e24e19/mewelokowopizimerikapi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae890538-936c-4d22-9fe6-a1393cc260c5/2002_buick_rendezvous_repair_manual.pdfIn PDF document text
    • http://xalomuzavege.pbworks.com/f/garbh_sanskar_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e3911c3-9bd2-416a-957f-9dabbb39566c/xivezedutuderanunivatoni.pdfIn PDF document text
    • http://bevojoluvu.pbworks.com/w/file/fetch/144477204/nagepebu.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_off0000e0c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C2 5240 bytes
SHA-256: 3d7fbeedd68e517164051375b86d40435b2f37f7113658c2f6869dd708671802
font_01_sfnt_off0000f28d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF28D 10904 bytes
SHA-256: 872034de3034bd8e739988ab82dfa73f9e4570abadeac781ca7225a579ab49c9

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