Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc640970e3f0a8da…

MALICIOUS

PDF

76.4 KB Created: 2021-03-30 18:12:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e1919c9af5b8a12225f139ed1802e2b2 SHA-1: 9ab2b6e723105dd3b400930b3686beb4fc95e4ff SHA-256: fc640970e3f0a8dac00d353d5eba33b2ad6304f4a694b700bb3c5aff50c86107
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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.
  • 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://dugedepap.ru/wix?keyword=live+tv+apk+download+2020 PDF link annotation
    • https://nobezenarevux.weebly.com/uploads/1/3/4/6/134628045/fazuwozinimezavi.pdfIn PDF document text
    • https://genunilime.weebly.com/uploads/1/3/4/3/134344847/fewizavugati_daserivim_motorafi_fopobikikaluze.pdfIn PDF document text
    • http://sudakomazagupa.22web.org/75714500373.pdfIn PDF document text
    • http://jijuduli.mywebcommunity.org/gsm_security_alarm_system.pdfIn PDF document text
    • http://rowefuzoj.mygamesonline.org/carmilla_free_download.pdfIn PDF document text
    • http://wopivobozas.66ghz.com/sevufawepivevokib.pdfIn PDF document text
    • http://kusafomidufe.mywebcommunity.org/foriv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://70848fb0-0fd0-490a-9360-2ffa38fc212c.filesusr.com/ugd/08e331_27897fe71861488b9159dd4a1123b88b.pdf?index=trueIn PDF document text
    • http://gurimexuma.epizy.com/amway_products_price_list_2020.pdfIn PDF document text
    • https://5e0c4d4d-41f9-428c-9564-b93e7cff6769.filesusr.com/ugd/510691_27cbc0b54ebc4d71a5dbc19dfab3eed3.pdf?index=trueIn PDF document text
    • http://zotoputoxo.rf.gd/78280783695.pdfIn PDF document text
    • https://4465b75e-e642-4f53-8c89-e22f0b9d4994.filesusr.com/ugd/ecd213_7d473b4054f0431faa3e5d8a22c15837.pdf?index=trueIn PDF document text
    • http://tafujeloraxofo.epizy.com/96307421592.pdfIn PDF document text
    • https://52a72965-a6d2-471e-b66a-59a59a4d663b.filesusr.com/ugd/e643da_c238667eaffd46febd9bc848c17f005f.pdf?index=trueIn PDF document text
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_bb53262a66894bab8440ba0b93a83578.pdf?index=trueIn PDF document text
    • http://xubufusizosawud.epizy.com/xiluzosuvuvixojegevizi.pdfIn PDF document text
    • http://jumebesatupa.epizy.com/puderizosexu.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/23828191924.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/84935903325.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/jeninulaxa.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/general_characteristics_of_negative_feedback_amplifiers.pdfIn PDF document text
    • http://zaravugudag.rf.gd/wow_wotlk_demonology_warlock_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/pdf_harry_potter_printables.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_off0000ecd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD7 5108 bytes
SHA-256: 63e0769266be1c83b1edf00ac4e931cd48494fec8bd70741e5e38b6722289831
font_01_sfnt_off0000fe6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE6D 11056 bytes
SHA-256: 7ab9af6395a6afd5b7ba18863ca6b23d1d1522804e26c32fa1ed8e4f3a621942

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