Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b053e2601d4ee38…

MALICIOUS

PDF

76.4 KB Created: 2021-03-08 23:39:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: c1603bfce6b1fd71e1e630a4a7706a54 SHA-1: 53b00cc4f2c5729e736e647e9c0a6fcb075665bc SHA-256: 6b053e2601d4ee384df730f16694af40e7a3ae594d58a60b25721db57c0b8e2e
164 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are disguised as free templates, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://jumiwimov.ru/123?utm_term=free+audio+visualizer+ae+templates PDF link annotation
    • http://megalit-korolev.ru/shoreline_mafia_musty_freefb35b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381748/normal_5fccdeeeccc7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472774/normal_60117a8101fab.pdfIn PDF document text
    • http://baltika-trans.com/jodudilnomdv.pdfIn PDF document text
    • https://todumubisopid.weebly.com/uploads/1/3/5/3/135312552/1030454.pdfIn PDF document text
    • http://artdebug.site/rite_aid_blood_pressure_wrist_monitorsxq41.pdfIn PDF document text
    • http://italywow.pro/smd_resistor0d3vu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495385/normal_5fd9b986d2538.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458388/normal_5fd2e92cd4b16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_603274bf53c57.pdfIn PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/fonutidode.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_266889010a91402a8617ca233ac3b54b.pdf?index=trueIn PDF document text
    • https://cf2e1f24-e5f1-4289-9567-3affce9c164e.filesusr.com/ugd/a4ea6c_6bd70d147c7b4fca9b7c608f9067769b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ninazarila/71542521596.pdfIn PDF document text
    • https://d4f1f58f-bd44-402a-a4b0-a3aa01e36dbf.filesusr.com/ugd/dffefa_61ea15626c6c42a4b0702a8001712e59.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/go_bananas_reading_plus_answers.pdfIn PDF document text
    • https://ee6bc897-aa08-459d-b6e6-b1b1d69fcba1.filesusr.com/ugd/7ba596_8ae0c671fd044c1daa3a54c2d3d4e529.pdf?index=trueIn PDF document text
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_a3a26966e1fc484192e85945ad12e942.pdf?index=trueIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_e6bb79a0f9aa466cb3d65e5744c0b6f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/kupikagi.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/already_tomorrow_in_hong_kong_movie.pdfIn PDF document text
    • https://b54663a3-ff9d-4122-b75c-69b71428c9b0.filesusr.com/ugd/cfa91a_7772d2b34c044bc8916e42aa4118c721.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gazivemon/how_to_make_wooden_legs_for_furniture.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_off0000eeb2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB2 5168 bytes
SHA-256: f1e60ae5b99f092c13498025d0937c495ab6b122a252cd2f7469a8995069f12c
font_01_sfnt_off00010040.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10040 10568 bytes
SHA-256: bda59a1549e2cc186e9119f3bd5cef1f613c3c5d01ffdcc1e43413d6105bd573

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