Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f3849d489e5b507…

MALICIOUS

PDF

75.0 KB Created: 2021-02-17 20:40:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f6d0d9257f051e1d705556bdb8dda24a SHA-1: 2a8240eea485a20c845577fa78ad7b687c311701 SHA-256: 6f3849d489e5b507ff7f5f2a0b41c732b85430e214a4011cd7fce1aec818b770
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a link farm, suggesting a malicious intent to redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were directly extracted, the PDF structure and embedded URIs indicate a likely attempt to exploit users through these external links, possibly for phishing or malware distribution.

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://leonvi.ru/strik?utm_term=mobius+actioncam+v3 PDF link annotation
    • https://cdn.sqhk.co/nemizuxe/ghdRicn/unblock_me_free_apk_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/gijhi8Y/81429274548.pdfIn PDF document text
    • https://zoxiniguve.weebly.com/uploads/1/3/4/5/134584112/doronuxigo_xoleg_sazakule_bafusadoxufebal.pdfIn PDF document text
    • https://cdn.sqhk.co/jofutagi/dmjigo2/spiritual_animal_totem_goat.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/jcXhctU/14871404478.pdfIn PDF document text
    • https://cdn.sqhk.co/joxesinejag/xWMeggx/best_tone_generator_and_probe_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/ggXighh/majezano.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/gonasidupij/veletiviwipenezofozugutol.pdfIn PDF document text
    • https://s3.amazonaws.com/panokojol/88678036638.pdfIn PDF document text
    • https://s3.amazonaws.com/kikunojulejuj/77327488730.pdfIn PDF document text
    • http://rexelipenaporux.rf.gd/70781273442.pdfIn PDF document text
    • https://s3.amazonaws.com/tomamujuf/bsp_party_telugu_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/sejakopa/10716764400.pdfIn PDF document text
    • http://toxawilel.epizy.com/dowuxagosi.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/old_english_calligraphy_practice_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/womonopizaxaxofawe.pdfIn PDF document text
    • http://litegizixusiw.rf.gd/raluxa.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_off0000e744.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE744 5184 bytes
SHA-256: 8b6d104b6ef9eca70e37481aa78b627c996e08b0b065eed4c18ee4e7b3275a73
font_01_sfnt_off0000f8ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EC 10944 bytes
SHA-256: 30f9208de173e6e623bfd9300ce171676774624fe3d48769096f62750d73cbfd

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