Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e20cc672463bbec…

MALICIOUS

PDF

75.2 KB Created: 2021-03-20 18:03:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c20fa09f26ee49e6df691ba0c610df94 SHA-1: 9c8b1499b0f38717899dc5b8e939b9ea99b54076 SHA-256: 8e20cc672463bbec8fbca4c033fa8dca18a65b79d2389ea63991bc0bc2f94e45
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 0.9990

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://ponafet.ru/wix?keyword=hibiscus+schizopetalus+for+sale PDF link annotation
    • http://sewaseg.22web.org/arizona_diamondbacks_uniform_pants.pdfIn PDF document text
    • http://wiinorama.space/what_are_the_first_4_cube_numbersr4jym.pdfIn PDF document text
    • http://latujor.22web.org/62609951910.pdfIn PDF document text
    • http://ductsunlimitedins.com/geometry_dash_2.1_mod_apk_free_downlngyfo.pdfIn PDF document text
    • http://shimano-stradic.ru/774949080115tmjz.pdfIn PDF document text
    • http://gidilixad.66ghz.com/arundhati_song_isaimini.pdfIn PDF document text
    • http://vashe-zdorovie.xyz/585562704006d3qj.pdfIn PDF document text
    • http://lelazuw.iblogger.org/attack_on_titan_wallpaper_season_4.pdfIn PDF document text
    • http://mangalvpodarok.ru/fazegefomuk61z7u.pdfIn PDF document text
    • http://sberpodarok2020.online/377421323320hv6u.pdfIn PDF document text
    • http://kebotup.66ghz.com/95618109846.pdfIn PDF document text
    • http://com-signto6.xyz/gugapewalowedexilaloboj7zolx.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/53c1df4d-2616-4f31-80ef-980c5df46285/lucky_coins_feng_shui.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee5c260c-375b-46af-acc9-813934909136/53165676096.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7029243e-6499-416b-8a65-dfaec705e3a8/psychology_12th_edition_2018_by_david_g._myers_and_c._nathan_dewall.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8771eafe-9e79-413b-b67a-9c27f50bcd9b/3853880659.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cbbcba1-9338-43f2-8c8a-c870c0829efd/80251956537.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462d0e6c-4371-488f-a397-4a9c0e0c5d79/what_is_the_third_book_in_the_twilight_series.pdfIn PDF document text
    • http://kigexozuzexozo.rf.gd/29206648710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c48d9287-4678-46ea-947c-9e6c17107af0/sims_4_patch_november_2020_release_date.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8fb1a68-b43a-4043-a722-7ea571bbebe1/78304362091.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c6b3e68-9e9f-4bec-9c9a-be119749e70c/20099253962.pdfIn PDF document text
    • http://kenamumiv.rf.gd/aylward_academy_sixth_form_courses.pdfIn PDF document text
    • http://bajipodi.epizy.com/67939272475.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_off0000e54c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE54C 5256 bytes
SHA-256: 98af268ac7db3f60619c6260fbea99f2dfb0ba108809f24d2b453e18ee21680b
font_01_sfnt_off0000f72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF72A 11304 bytes
SHA-256: 0224735137c48e0c56ab775f5767de5b0e4c43bcc437adbb27bccec326ababe7

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