Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b09f3bf665fd6c1…

MALICIOUS

PDF

87.7 KB Created: 2020-11-11 13:01:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 723efee651739b69624f0a9d17e9f501 SHA-1: 162ad46a5c8d124ad75b16da3600dcb5a3d9ff2b SHA-256: 8b09f3bf665fd6c13a616923cc429ad3d7dc72f744c492310a106ac7e5b711c7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9996

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 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://traffset.ru/123?keyword=directions+naples+maine+to+portland+maine PDF link annotation
    • https://bevarolemi.weebly.com/uploads/1/3/4/6/134685224/jadaxigimabataj-takeb-dosurelo-gomik.pdfIn PDF document text
    • https://tipiridevozono.weebly.com/uploads/1/3/4/3/134349557/620266.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/a2d229.pdfIn PDF document text
    • https://kotafogora.weebly.com/uploads/1/3/4/3/134322717/mazodisej-fepuk-xatuxizuxosewuf-fosirimekiri.pdfIn PDF document text
    • https://mumixopid.weebly.com/uploads/1/3/1/8/131872042/7131348.pdfIn PDF document text
    • https://moguvikob.weebly.com/uploads/1/3/0/8/130874292/dasibeleduwike_wupatedumuxuj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/dujepav/spirit_stallion_of_the_cimarron_2_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/rekuzixugobur.pdfIn PDF document text
    • https://s3.amazonaws.com/kevava/causas_y_consecuencias_del_alcoholismo_en_los_jovenes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a93580c7-ef43-4962-b4e4-345b3ef7da3f/nemezomowo.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/83024260623.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/main_causes_of_ww1_imperialism.pdfIn PDF document text
    • https://s3.amazonaws.com/tazibabebamep/willow_canyon_wildcats_logo.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/61841663600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de5d89ea-4389-4886-9a68-93d17dbba806/karaok_je_joue_de_la_musique.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eac3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC3 5220 bytes
SHA-256: d10d5e983f96c690f88d0fa39a2e2365094df1eb3faa8d9007ea1e01b8366278
font_01_sfnt_off0000fc70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC70 3772 bytes
SHA-256: b850e935aaf604f3e1824861b6c46746957ce6d0e1401f4bf16d070b42224529
font_02_sfnt_off00010814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10814 10500 bytes
SHA-256: 88b6f3223d62148afcc5d169a76ec7293944fb344fdf02a5c3ae828d12aab096
font_03_sfnt_off00012b35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B35 12028 bytes
SHA-256: 4fb468a88e4e58e9ef36f1eb996d9c88c75cea5509d0bdae5e54153b3cc54b4e

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