Malicious PDF — malware analysis report

Static analysis result for SHA-256 6536f1d46a506752…

MALICIOUS

PDF

65.9 KB Created: 2021-03-19 22:07:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0df3c0ba05913fe6771e30a250aea34c SHA-1: 8e984d261e9ce707168eb1562bbae7f37279a0b3 SHA-256: 6536f1d46a506752fa8323ba2ab83bd33d002ead97bd7098905f4922c83032fe
156 Risk Score

Malware Insights

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

The file is a PDF identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://soxebez.ru/wix?keyword=sloppy+mechanics+wiki+tune+cabinet', is particularly suspicious and likely leads to malicious content or phishing pages. No scripts were extracted, but the PDF structure itself is indicative of a malicious intent to redirect users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=sloppy+mechanics+wiki+tune+cabinet PDF link annotation
    • https://cdn.sqhk.co/pipagalax/OTIiajc/guess_the_creepypasta_free_online.pdfIn PDF document text
    • https://vikurevago.weebly.com/uploads/1/3/1/6/131606257/pigol.pdfIn PDF document text
    • https://biruwilajefi.weebly.com/uploads/1/3/4/6/134651793/4128533.pdfIn PDF document text
    • https://cdn.sqhk.co/tifesijoja/hbKn2PF/dividing_fractions_calculator_3_fractions.pdfIn PDF document text
    • https://pemejelusapi.weebly.com/uploads/1/3/1/3/131398576/mugufu.pdfIn PDF document text
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/vetolad.pdfIn PDF document text
    • https://cdn.sqhk.co/bolukawet/cij4Akg/apac_entrepreneur_magazine_review.pdfIn PDF document text
    • https://cdn.sqhk.co/sodovokak/ljhe9JQ/hot_spinach_artichoke_dip_no_cream_cheese.pdfIn PDF document text
    • http://levipek.22web.org/how_much_does_your_permit_cost_in_ny.pdfIn PDF document text
    • https://madoguwulivusi.weebly.com/uploads/1/3/0/7/130775056/999ed3882758e8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rebomedug/canon_ir_2006n_datasheet.pdfIn PDF document text
    • http://gikunipif.epizy.com/android_pie_auto_brightness_not_working.pdfIn PDF document text
    • http://fogiwomagivizu.rf.gd/how_to_reset_my_kenmore_microwave.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3527d9-dac5-43ec-a6aa-317f5e81e5f1/tokej.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/lagu_hits_billboard_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c62af0a5-5e65-4fbc-b08d-55657349661b/how_long_does_ps3_controller_battery_last.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/kozuxuraxedowowonemik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17d3336e-1112-4475-b73a-339d2abd059b/grimal_diccionario_de_mitologa_griega_y_romana.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/vazov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/15170988-3024-4fb3-a2ad-db9766979271/un_puente_hacia_terabithia_online_espaol_castellano.pdfIn PDF document text
    • http://fovuxux.rf.gd/pumenalemar.pdfIn PDF document text
    • https://s3.amazonaws.com/juwofuxufijup/bses_rajdhani_bill.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4da3c5b9-66c8-470c-8ccc-7043260a1ac9/bedidixevuditisozumi.pdfIn PDF document text
    • https://s3.amazonaws.com/wiremeresegikon/27995785735.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/fokesowulajosisefi.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_off0000c500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC500 5576 bytes
SHA-256: a25b2482a287475f3a34223cddb61e80264f5c5ef34d3aa1c0bc32614315e70e
font_01_sfnt_off0000d7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E4 9776 bytes
SHA-256: 33622ed5723e761828f7742f4132e9b0032f036d7927685b1822fab978d709c2

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