Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d2ca91c58fdd54a…

MALICIOUS

PDF

80.4 KB Created: 2021-03-14 21:47:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4d5418a5b4600f456183d8d618a4e7d9 SHA-1: e6f5f20eb346dee9f315657ad052faefe6202484 SHA-256: 2d2ca91c58fdd54ac092ed9ebe95cfaf84b4d58dc5dfd8c251f5533681388f7b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL leading to a site offering a movie download, which is a common lure for phishing or malware. Heuristics indicate the PDF is a link farm on disposable hosting and ML classifiers strongly flag it as malicious. Although no scripts were extracted, the overall structure and URL usage suggest a phishing or malware distribution attempt.

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://jacksth.ru/wix?keyword=batman+vs+superman+telugu+movie+free+download PDF link annotation
    • http://apparently-home.com/1664399040nlalt.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/catalogo_natura_ciclo_8_2020.pdfIn PDF document text
    • http://tejidirexe.mywebcommunity.org/11028258475.pdfIn PDF document text
    • http://clipshd.design/skyrim_enchanting_guide_uesp3i2so.pdfIn PDF document text
    • http://lnstagramcentre.net/reworivnnbgk.pdfIn PDF document text
    • http://insta-sale.site/benabinemjbbk5.pdfIn PDF document text
    • http://zeruxejobimal.mywebcommunity.org/what_yoga_poses_are_good_for_lower_back_pain.pdfIn PDF document text
    • http://help-bluebadgecenter.com/fisher_mama_bear_wood_stove_owners_manualnr6hx.pdfIn PDF document text
    • http://experiment.website/84903832122mrtds.pdfIn PDF document text
    • http://libralab.digital/safety_1st_guide_65_manual568mc.pdfIn PDF document text
    • http://dumagut.22web.org/27869977911.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/a8e37e35-c482-419c-a757-ac55fb3d196b/31963482814.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/36070889463.pdfIn PDF document text
    • http://dirulibas.onlinewebshop.net/28904814653.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcc33f9f-4457-41f6-9d84-bc9c9d6c2f1a/fl_studio_10_producer_edition_manual.pdfIn PDF document text
    • http://guruwemuzotal.epizy.com/labukiweraj.pdfIn PDF document text
    • http://koxepari.rf.gd/free_spay_and_neuter_clinic_phoenix_az.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/root_words_greek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d5e8caf-21a2-43d4-9e08-5c2c40ea2a3d/73645897093.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/watch_band_length_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/logic_discrete_mathematics_questions_and_answers.pdfIn PDF document text
    • http://mifumupesa.rf.gd/54456357252.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_off0000fab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAB1 5560 bytes
SHA-256: c2d0bcb0e1ccf78424839efe1c7b42d1509b68f56bc06f752c6496f238f5d089
font_01_sfnt_off00010d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D9D 11368 bytes
SHA-256: a180aade5bdd4a1694720fe8f5361eb8cf31c22400ee559a7f3b65fb4d89dc97

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