Malicious PDF — malware analysis report

Static analysis result for SHA-256 fface68ade1da8ec…

MALICIOUS

PDF

78.6 KB Created: 2021-03-27 18:15:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 45bf3e6cb4d4292db35d6df158b14fb8 SHA-1: 169ca9fa6401f3a7fc672168a84ee72f03bc5072 SHA-256: fface68ade1da8eca9ff9c4a2b295d7ef0d3705e2bee4356dd8bc56a05f0caac
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 0.9991

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://fokemale.ru/123?utm_term=png+background+hd+for+picsart+zip PDF link annotation
    • https://cdn.sqhk.co/derilalovate/jaibjeC/womobizulidasu.pdfIn PDF document text
    • https://lajizifoposu.weebly.com/uploads/1/3/5/9/135958207/nedesunaw-wolufudesebu.pdfIn PDF document text
    • https://manedubel.weebly.com/uploads/1/3/4/5/134587872/famibudakojira-fitezeron-sukirureronuz-misojofi.pdfIn PDF document text
    • https://winateminapalem.weebly.com/uploads/1/3/4/0/134041456/salop_mosizafen_julineviz.pdfIn PDF document text
    • https://tanofome.weebly.com/uploads/1/3/5/3/135316841/82b359.pdfIn PDF document text
    • http://nulatapukedu.scienceontheweb.net/xizewet.pdfIn PDF document text
    • https://garigokowexe.weebly.com/uploads/1/3/4/4/134440629/bavufegabulesot.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/26050050566yuoz4.pdfIn PDF document text
    • https://cdn.sqhk.co/nezafomura/cjdDIhd/filemaker_pro_15_guide.pdfIn PDF document text
    • https://pijafure.weebly.com/uploads/1/3/4/4/134457855/lufavelilevop.pdfIn PDF document text
    • http://kejumazinanu.mywebcommunity.org/cardiomiopatia_dilatada_causas.pdfIn PDF document text
    • http://top-odejda.com/gejameruxabjmw8.pdfIn PDF document text
    • http://megatorg.ru/28371527021gubpf.pdfIn PDF document text
    • https://mifopezuzata.weebly.com/uploads/1/3/4/4/134484464/5841439.pdfIn PDF document text
    • https://cdn.sqhk.co/nigulavax/9ibrUnd/46872725733.pdfIn PDF document text
    • https://seruvexude.weebly.com/uploads/1/3/4/4/134404645/juxemuledagavejowupa.pdfIn PDF document text
    • https://vamalogobiw.weebly.com/uploads/1/3/4/6/134696595/feguwutowebidum.pdfIn PDF document text
    • https://mijutadozas.weebly.com/uploads/1/3/4/5/134590660/pifatoxenajovuz.pdfIn PDF document text
    • https://cdn.sqhk.co/wikelere/4rTNvha/offroad_racing_games_ps2.pdfIn PDF document text
    • http://tiwujatujoput.mygamesonline.org/chordate_zoology_book_download.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/widofafane/android_offline_sdk_package_installer.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/basic_tactics_for_listening_book_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zalomi/bricked_bios_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/terukexasezuresakewa.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_off0000f831.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF831 5640 bytes
SHA-256: b777f69866ef65a0b50b4c391bf31c49872fe4e6db08a487616b97abe184970c
font_01_sfnt_off00010b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B68 9824 bytes
SHA-256: 756208908f38faf426f02ec9105f9e63fbe4f71c32ea63e777ac3e44693e5adc

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