Malicious PDF — malware analysis report

Static analysis result for SHA-256 797a887a7c67e9e4…

MALICIOUS

PDF

77.4 KB Created: 2021-03-22 06:16:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a64d7686eff2941ca2d542fa5ad68e8a SHA-1: 13ff1465d6f0321c9b506c81f903d509c6006e25 SHA-256: 797a887a7c67e9e49d1a07188880f7576a7667873a85354115da45613e4a0f6c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, identified as a link farm. One of the primary URLs, 'https://lozipotod.ru/wix?keyword=character+web+template', is likely part of the malicious infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the structure suggests a phishing or SEO manipulation attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/wix?keyword=character+web+template PDF link annotation
    • http://gowanenutik.mypressonline.com/jeep_wrangler_patch_panels.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://uploads.strikinglycdn.com/files/6e0efb83-2fad-4cbd-85f8-2cd8b348f5f8/93436290372.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/craftsman_electric_edger_2.5_hp.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26aa15de-9036-4824-853b-efb99517fe1c/58755476349.pdfIn PDF document text
    • https://44034db3-6cdd-4729-adf3-7ccd6afcf354.filesusr.com/ugd/9fe9cc_1873ee6102f04a729e4a20c802c3cf3f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9768bf5-da12-4bc9-8570-6187f00f2357/vugisulewifivenokusu.pdfIn PDF document text
    • https://8aefc570-8454-48c3-bb63-d4d1067b7ce0.filesusr.com/ugd/5c9621_db1946501161478295db27c0ba91ddc1.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d9052c6-8ee7-4692-9d74-384f76068e84/wugexarisowedurufemela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8abbdc91-f64f-4799-8ea6-14fc28b4aa34/15366604756.pdfIn PDF document text
    • http://taguloxutenafol.myartsonline.com/9400923582.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/unity_2018_augmented_reality_projects.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7200f22-5950-42a3-bd92-6dcfe3c18401/panasonic_kx-tgc210eb_cordless_dect_single_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da74fa9b-106c-4c0f-9f40-2c1e767d69df/what_would_cause_a_new_dryer_not_to_heat_up.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3081bbb3-d1eb-4113-9bbf-88aef4d4f644/how_much_is_drill_sgt_pay.pdfIn PDF document text
    • https://s3.amazonaws.com/teximikamukubo/evil_dead_tamil_movie_part_3.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/drayton_digistat_30002_user_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73669731-0335-40d9-b0ad-a4a4172d6d1d/84764789770.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7b78b5c-4e86-4ba9-a721-3db075d811b0/41629225142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cafa2507-cafb-4316-8783-8ddfa20abf94/52184544531.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e667.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE667 4776 bytes
SHA-256: a8a648375673a37656af67e4ac14e044b64063bcede5489b4ca6bf62c4998b29
font_01_sfnt_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 10568 bytes
SHA-256: 71e20ea7d365a32cec5b45929df73b54ae0c68891b2c63bac601ce3205943ede
font_02_sfnt_off00011a94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A94 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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