Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e67d01267dfab6e…

MALICIOUS

PDF

68.4 KB Created: 2021-03-30 22:09:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 082836e7d21a2a5a9a79a252ddf18fe4 SHA-1: 27e50b86ad40305157d4f6dfff39663dd95e7b1e SHA-256: 5e67d01267dfab6ea48219620370ab409671f43e8d46d07012073b0dc87e50e6
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of external links, a common tactic for SEO manipulation or to redirect users to malicious sites. ClamAV detected this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95', indicating a phishing or trojan payload. The ML classifier also flagged it with high confidence. The presence of numerous links to disposable hosting services further supports a malicious intent, likely to distribute further payloads or conduct phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://zajinet.ru/wix?keyword=evo+vr+gamepad+pro+manual PDF link annotation
    • https://sigoxavofilaza.weebly.com/uploads/1/3/4/6/134697452/014cd96dbc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484154/normal_60262a7faf9b2.pdfIn PDF document text
    • https://cdn.sqhk.co/junikesiza/jhaGgif/microsoft_sharepoint_designer_2010_32-_bit.pdfIn PDF document text
    • https://cdn.sqhk.co/pijovowifil/es3tie1/best_rock_ringtones_mp3_free_download.pdfIn PDF document text
    • https://rofikilidoxomuk.weebly.com/uploads/1/3/4/0/134017179/tugufibate-ledudewi-magabofotisotej-valinusifivuda.pdfIn PDF document text
    • https://jerubezefago.weebly.com/uploads/1/3/0/8/130874212/zizurivaforet_nizemav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427077/normal_600b137bae87c.pdfIn PDF document text
    • https://ruzamoga.weebly.com/uploads/1/3/4/7/134761687/ebe36dac8200.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/idhahh9/14056525597.pdfIn PDF document text
    • https://wejolizamu.weebly.com/uploads/1/3/4/7/134766198/a7c4a4ff9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_601903c3b9693.pdfIn PDF document text
    • https://jumegelizo.weebly.com/uploads/1/3/4/7/134712838/papemejexepi.pdfIn PDF document text
    • https://cdn.sqhk.co/dulunukosep/e1hi3gh/human_karyotyping_gizmo_answer_key_activity_b.pdfIn PDF document text
    • https://lelugawe.weebly.com/uploads/1/3/4/5/134590829/3494152.pdfIn PDF document text
    • https://renenanap.weebly.com/uploads/1/3/4/6/134666424/xasimusegamab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390051/normal_605300233fd27.pdfIn PDF document text
    • https://cdn.sqhk.co/togokitaz/9ib8ghb/gikakopitedatezanagifapiz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/silubebebefuju/73907043724.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48b8a45e-6bf2-47dc-828e-130528ea447d/77245521287.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7bc990e-a6f7-4b65-abb4-59a7de45b27a/migakaganumitimak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b6f88d5d-ba2b-4cba-86c0-1ef9d582d519/xorozu.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/59529985340.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e75bfeee-db1b-4bdc-8cf0-faf8573c5767/wodufubuvirus.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/64443143861.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_off0000cf35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF35 5120 bytes
SHA-256: 816bcaab9b5d65b93856a416309f161fd238bc1b691c85b57fe146902fd9e64e
font_01_sfnt_off0000e094.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE094 9960 bytes
SHA-256: 7c58e6331753fd247ee42a549eba3666196445d79018b57a29a31269f770077b