Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6ad91e5af08669…

MALICIOUS

PDF

56.5 KB Created: 2020-10-29 04:14:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: d4ba53347f5a0195fbca0b2130471607 SHA-1: 73417fe8e40296071cbf79b155ead78f35298567 SHA-256: 0d6ad91e5af08669d7d2e4d08e153aa68eff7f7ace4a63ca6f0eeffd54d0354d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one identified as a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://gettraff.ru/strik?keyword=the+lost+gospel+of+thomas+pdf', suggesting a phishing or content-luring attempt. The presence of a large number of external PDF links further indicates a link farm or SEO manipulation tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/strik?keyword=the+lost+gospel+of+thomas+pdf In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/5693/8146/files/89612630076.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/lagusugasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6424/8470/files/honeywell_water_heater_thermostat_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18caec56-f385-4b7b-b647-89d2c25c64f8/massey_ferguson_35_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea5c2ccf-9507-4225-be34-4f3ef7dc387e/42193150999.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e17f4eb-2444-4bd9-9d14-b31aa8bde313/781930947.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22fbae9d-17a8-455c-9a9c-419d89b3ebe7/luzazopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7a67e38-26f2-405b-bb54-ad4c2ac9a6f0/dotalagi.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/89513478140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7001/9994/files/33793169308.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4499/2666/files/33135504821.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3751072d-0edd-433c-b3fd-1a9f2e164276/buvelomudelu.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/mumbai_society_bylaws.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/jisuwuxopifolakuto.pdfIn PDF document text
    • https://s3.amazonaws.com/gavexilatuvitaz/catecismo_menor_de_abancay.pdfIn PDF document text
    • https://s3.amazonaws.com/labitajaxatufib/spell_check_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7952de-66c4-4aa3-9c0e-2f6b51bb35f9/72623695524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0c5f1c9-4f16-48ac-96ad-9b88e68f2cc8/26946237879.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b14e7254-a8d7-40a5-877e-a39c8b756ab4/26929559405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1212/7424/files/realidades_2_capitulo_1b-4_guided_practice_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a734f7e-600d-484d-9210-b2dbe8716636/.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_off00009e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E6F 5308 bytes
SHA-256: 90fcca5c61b61cf390f0def1486d43704f298df6d999fc648dc1c7bd60b9b6b5
font_01_sfnt_off0000b05c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB05C 10644 bytes
SHA-256: fd6b5cb36fe2ed33335affbbeffc2b7b38ebb119d1e0f53317b4710280fb5917

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