Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2a380205c35ec14…

MALICIOUS

PDF

80.2 KB Created: 2021-05-22 04:48:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: d1512895c864641391d8a52e937939ee SHA-1: cae28b5f81ea77f3502c74c692732a8155032a1e SHA-256: b2a380205c35ec14326062c3637f09cfecbfcc4592f07a848808b224388fed6d
186 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains a significant number of external links, many hosted on disposable domains, suggesting a link farm or SEO manipulation tactic. The primary URL, https://lozipotod.ru/strik?utm_term=granny+mod+menu+apk+android, likely serves as a lure or a redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • 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://lozipotod.ru/strik?utm_term=granny+mod+menu+apk+android PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4388274/normal_6014d973ccf64.pdfIn PDF document text
    • https://votilolezin.weebly.com/uploads/1/3/4/3/134307270/tivunukozofimu.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/tetusebidivodux_gekukafewit_lotosoru_risewizajare.pdfIn PDF document text
    • https://jogelobob.weebly.com/uploads/1/3/5/9/135961552/4917957.pdfIn PDF document text
    • https://betewobinolatid.weebly.com/uploads/1/3/4/7/134756009/fd407aff.pdfIn PDF document text
    • https://degitetebumike.weebly.com/uploads/1/3/1/8/131857056/281827b.pdfIn PDF document text
    • https://mexupapomumag.weebly.com/uploads/1/3/0/7/130775103/bowubavabetabefo.pdfIn PDF document text
    • https://dojinutek.weebly.com/uploads/1/3/4/1/134108596/zakoxubesu.pdfIn PDF document text
    • https://kosofisipituje.weebly.com/uploads/1/3/5/3/135329454/3276992.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421615/normal_60188c4cb4004.pdfIn PDF document text
    • https://sifumoxijobobo.weebly.com/uploads/1/3/4/4/134493963/nuludulaxutokojudufe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f84a30de-64e5-4c67-bea1-5fcb598c3c88/20889747820.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a028f76b-3458-4407-94d5-81df58e1faa5/dlink_dns_320_firmware_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d49fe9e2-fbf2-4779-8d7e-604fec74d45b/how_to_reset_a_linksys_re6500.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/bed_sheet_pattern_texture.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1111d534-837b-4e67-8a79-bce82ca209ba/visual_basic.net_free_download_for_windows_7_64_bit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d4edd27-3047-4240-a488-fd61b3aad4bc/is_valyrian_a_made_up_language.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a190a31-7ac8-48da-80c9-cb455dd5f9ea/18599059413.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/90408925841.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/92c27333-f982-4bc8-99c7-980109399b12/how_do_you_calculate_motor_efficiency.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30192e7e-1cc3-4609-bc13-309318110774/wofaviv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db3ccb6f-6c18-4ca7-ad31-ea216c3fb54e/17380514031.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_off0000f9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D7 5092 bytes
SHA-256: 03c772745878c3457363cad95df3e71e862f025c48df24b6da2472265b0b0697
font_01_sfnt_off00010b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B21 11656 bytes
SHA-256: 142becf9668f5bffdb11564e93bd5cb8595cb7816861bd4ddcc834583fc23843