Malicious PDF — malware analysis report

Static analysis result for SHA-256 e677a9ef8ee5fa18…

MALICIOUS

PDF

101.6 KB Created: 2021-02-12 21:09:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b8a0e36e9f58b55d9358187cfe8e02ae SHA-1: 2fc7a344858f3d4a5a7fbeef8743885960c7b1f1 SHA-256: e677a9ef8ee5fa181e86c47c4917bf03e63d22f3a0972554dbf7f2c104749e77
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains text related to game evolution, suggesting a lure to attract users to click on the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9940

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://crophysi.ru/123?utm_term=what+level+does+bagon+evolve+in+alpha+sapphire PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4477139/normal_6007d8c4e8120.pdfIn PDF document text
    • https://ravikuzisuwu.weebly.com/uploads/1/3/4/4/134470025/6191343.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/kedujazoset.pdfIn PDF document text
    • http://cabinetsly.xyz/ironman_marrakech_athlete_guide6gfio.pdfIn PDF document text
    • http://copyrightsupporteds.com/20069548779w08h5.pdfIn PDF document text
    • http://beremoter.online/whistle_blowing_policy_and_procedurevgw2k.pdfIn PDF document text
    • http://hdsamara.ru/4878646576537eg6.pdfIn PDF document text
    • http://winnerslm.space/terraform_aws_iam_policy_document_conditionak30g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392191/normal_5fe8dac24d0e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482216/normal_5fd792b8d2b01.pdfIn PDF document text
    • https://marikiwow.weebly.com/uploads/1/3/1/3/131379510/tefebavapetap.pdfIn PDF document text
    • https://nofabirudop.weebly.com/uploads/1/3/4/4/134455392/7209768.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://josejutolaxof.rf.gd/9271362239.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fb80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB80 4900 bytes
SHA-256: 6e6cb1db376af37ec3c5f0facaa7602852d7bd43469fb6618ec1d23243be1171
font_01_sfnt_off00010c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C9D 5224 bytes
SHA-256: 7a5c7f60d2e000c1d1ceebea4c0e21eea9226a05357b2219be004f1e83466e70
font_02_sfnt_off00011e51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E51 6468 bytes
SHA-256: 1daa94bca273073a9fb76b9b6bc23739df5b228d684c49e322090a6b34c319f8
font_03_sfnt_off00012f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F88 12024 bytes
SHA-256: db9a057b12c927de34916bc2e8cef47233ae635777d6dd47e70b8d11bcd1db29
font_04_sfnt_off00015722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15722 16176 bytes
SHA-256: 9e21a42aad8e0ec0986da58a9281c434ba350ebe6b23c93574358024a0c7e571
font_05_sfnt_off00016c53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C53 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
font_06_sfnt_off00017a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A53 2688 bytes
SHA-256: 2f92157fd57c6ea5edcef94dc2c886791f6593fb08c7abf0a25ba748f4a73082