Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba7215dde26b8494…

MALICIOUS

PDF

129.3 KB Created: 2021-05-26 07:36:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7c58060543e92426f29095bd4b658c29 SHA-1: a97932fceae698e7c78583b99576efe9897dcbf2 SHA-256: ba7215dde26b849425f42ca0df3abeff0c3df4e43b9e505933e03f730549e901
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. One prominent external URI, 'https://gimoguvi.ru/strik?utm_term=utility+theory+economics+pdf', is flagged as suspicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself is used to facilitate the 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://gimoguvi.ru/strik?utm_term=utility+theory+economics+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4412583/normal_602f9c1367cf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386613/normal_60641f3540388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_5fd737fd281ab.pdfIn PDF document text
    • https://tokafiwunan.weebly.com/uploads/1/3/4/3/134372509/48619f699b88ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485329/normal_6059184546e1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fe551ecd075c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451949/normal_605bb0c13bcf7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501364/normal_60147ca352d97.pdfIn PDF document text
    • https://kazodorog.weebly.com/uploads/1/3/4/9/134904699/jasegumonovojo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490141/normal_5ffc481b8b83a.pdfIn PDF document text
    • https://tagudosalanuku.weebly.com/uploads/1/3/1/4/131452811/bozemarejurope-zaxugutija-nagejixaduzude-javazinet.pdfIn PDF document text
    • https://wuzusujozibavil.weebly.com/uploads/1/3/4/6/134689519/f56355dc2c2e9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427529/normal_5fcd07b230766.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386349/normal_6041d4cb7e6e2.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/1ed94a0f-7193-4712-a081-c04c2c5bfa23/scotts_turf_builder_edgeguard_mini_broadcast_spreader_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/17c7812d-bad0-4d05-89a6-2814a840447a/league_of_legends_patch_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3db5a4a6-3486-4af6-a399-53d776b8770c/why_is_the_crown_of_my_head_burning.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c70260e-daa6-406e-bb06-0f19e44ac5aa/can_google_home_play_music_on_my_phone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c56703a9-ea2e-4421-bb9b-9819ce3f1061/das_feriados_en_mxico_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/489a15f0-1cbb-45b8-9e54-138b1a50da44/how_to_unlock_a_deep_freezer_without_a_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f315a76-fc16-4672-a4d7-bfc5147ba1ad/how_to_reverse_image_search_google_iphone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b017e27-d0d0-4cda-b9b5-8f3f7b32cb2b/72378239873.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_off0001b8da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B8DA 5280 bytes
SHA-256: ea52c16a1de0447770d8a28ea8a23f4661d9e69055f8a626ea1aec3754b71d67
font_01_sfnt_off0001cab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1CAB1 12896 bytes
SHA-256: 027b51c8855000803abe40d5282f33beee4d7b1929c73efa2e8e12f3e0a74425

Open this report in the interactive analyzer, or submit your own file for analysis.