Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a7c22f8c18066f…

MALICIOUS

PDF

77.6 KB Created: 2021-03-30 03:28:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f70f19a2056fe89152afa6fd7c5b175e SHA-1: 123c1fa2f701c8de018e1b33afd64ffae1b0fdf9 SHA-256: c3a7c22f8c18066fe98c87b09b191910547cd08194899574d6e7aec6b3931ae8
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9995

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 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://xezojetit.ru/aws?utm_term=best+dps+pet+for+hunter+bfa PDF link annotation
    • https://cdn.sqhk.co/buvaboda/Ujapcij/poker_liar_dice_rules.pdfIn PDF document text
    • http://newobesarejif.22web.org/nidovolanidevaguv.pdfIn PDF document text
    • http://pafekusiwajida.66ghz.com/tablayout_viewpager_android_github.pdfIn PDF document text
    • https://cdn.sqhk.co/womilepeba/hdnidif/3105808533.pdfIn PDF document text
    • https://xigobiniliw.weebly.com/uploads/1/3/5/2/135298108/sulame-tokowetovone.pdfIn PDF document text
    • https://ziliseze.weebly.com/uploads/1/3/4/8/134855349/fuxid_zasebe_waguzutut.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/8Pviijd/oscar_wilde_nyc_menu.pdfIn PDF document text
    • https://safesawugu.weebly.com/uploads/1/3/2/8/132814337/jowabowufaroxer_liwevokesek.pdfIn PDF document text
    • https://jujoxiro.weebly.com/uploads/1/3/4/8/134875196/1333392.pdfIn PDF document text
    • http://favanitum.iblogger.org/7572302355.pdfIn PDF document text
    • https://karesaxu.weebly.com/uploads/1/3/5/3/135392924/4552056.pdfIn PDF document text
    • https://vomomojivebaju.weebly.com/uploads/1/3/4/5/134599032/wulinotitowu_ridur.pdfIn PDF document text
    • https://cdn.sqhk.co/watexoba/hh8A9ys/28702537782.pdfIn PDF document text
    • https://fejaxipanegis.weebly.com/uploads/1/3/2/7/132712099/3507573.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/7higdpz/20996074828.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tiwinifo.epizy.com/49624491336.pdfIn PDF document text
    • http://vovidume.epizy.com/19119031962.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/what_is_the_word_contempt_mean.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/52407590061.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/arduino_software_for_windows_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/great_hall_of_the_bulls_ap_art_history.pdfIn PDF document text
    • https://s3.amazonaws.com/papuja/sony_rx10_iv_video_settings.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f29e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF29E 5288 bytes
SHA-256: 4c0b268366e08be3188573526c3e9f619a3883636367ba45959cb890e8941967
font_01_sfnt_off0001048d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1048D 10828 bytes
SHA-256: 0c752edd0eccab8db18fabce67d37ee6134145c0fd9ca1cc0acfa5e95049e8c0

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