Malicious PDF — malware analysis report

Static analysis result for SHA-256 2be59aa6984c5f92…

MALICIOUS

PDF

79.4 KB Created: 2021-03-06 17:55:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 615a10c141bb6906efb36a67bc89bc96 SHA-1: ebc62c3740b80cf667bfb218c9f44a9b1e1f2bf0 SHA-256: 2be59aa6984c5f92b7e562754051947202b96444944318872483284486ccea2c
126 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely for phishing or malware distribution. Heuristics indicate it's a link farm on disposable hosting, and ML classifiers strongly flag it as malicious. The document body, though heavily obfuscated, appears to contain search-related terms, suggesting a lure.

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://vilenefex.ru/aws?utm_term=2008+honda+civic+ac+compressor+replacement+cost PDF link annotation
    • https://cdn.sqhk.co/bugininaxi/ajbiidR/weathertech_discount_for_healthcare_workers.pdfIn PDF document text
    • http://suzofovolavuk.scienceontheweb.net/panasonic_phones_customer_service.pdfIn PDF document text
    • http://lulopoboxefon.scienceontheweb.net/38900051087.pdfIn PDF document text
    • https://cdn.sqhk.co/bajipugotox/ASRgejf/nova_launcher_prime_apk_free_download_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/bdgcx1N/18020988455.pdfIn PDF document text
    • https://cdn.sqhk.co/xugavizira/hoa1Lge/50691390162.pdfIn PDF document text
    • https://cdn.sqhk.co/vobilurerire/ighc2hi/cha_cha_cha_dance_video_free.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/jujadodedaruxix/goxamitekadarifobi.pdfIn PDF document text
    • https://9abff256-b119-4e75-a612-dfc075f5428e.filesusr.com/ugd/c73517_b38e65882bdd4ad7bf0553de5b48491b.pdf?index=trueIn PDF document text
    • https://eb72eaa1-ef55-40a3-a653-f6d21bccf295.filesusr.com/ugd/54913d_76df73134c03418ba4c10baf38ed3f84.pdf?index=trueIn PDF document text
    • http://vatapusaf.rf.gd/akcent_songs_songslover._com.pdfIn PDF document text
    • http://pidivatepijalaw.epizy.com/is_uncle_iroh_stronger_than_ozai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd3bd7df-d070-41e5-8790-0f5c0dcaeb78/74595003269.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98a3b3e9-35e9-4ac5-9fb4-a913168e4c30/how_to_calculate_simple_and_compound_interest.pdfIn PDF document text
    • https://5d3a357a-25b2-4459-9cd8-210b235f7b36.filesusr.com/ugd/45e30f_6d8931d05c394507b6e221b045d342e8.pdf?index=trueIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/peace_offering_ideas.pdfIn PDF document text
    • http://budobilososuw.rf.gd/jesus_mi_amigo_letra_y_acordes.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/xokizibajuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/bipovoromoj/vehicle_bill_of_sale_template_georgia.pdfIn PDF document text
    • http://nibedob.rf.gd/58357851235.pdfIn PDF document text
    • https://50b44c92-959e-4a15-bf83-93d6b2b518d6.filesusr.com/ugd/3ed44c_333fa6c7147049f299a121d7b53aff1b.pdf?index=trueIn 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_off0000eb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB01 5536 bytes
SHA-256: e4f3f59fcd9aaddf32d7f5e2f9f9538fb059f1c2bd9a45470ea6eb7da448d439
font_01_sfnt_off0000fd8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8B 10596 bytes
SHA-256: 88ea5d4d8096ea345447b6ad9210d4e4da68f35b54dad2e4f04b84b39135989f
font_02_sfnt_off0001218a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1218A 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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