Malicious PDF — malware analysis report

Static analysis result for SHA-256 a654dcfe409b72f9…

MALICIOUS

PDF

83.7 KB Created: 2021-01-20 13:04:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 2d787879baf78c0450ba7fefe2ec0cb6 SHA-1: e049276bf8bf34a6c6909713262f3937f144b11f SHA-256: a654dcfe409b72f9bf7add469d4fa99c76b0acd25f8988d197c5184c82812ef7
214 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links designed to redirect users to malicious websites, as indicated by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The document body, though heavily obfuscated, suggests a lure related to 'Archeage Unchained guide'. The presence of multiple unknown URLs and the ClamAV detection strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://gettraff.ru/123?utm_term=archeage+unchained+guide In PDF document text
    • https://fukuzodi.weebly.com/uploads/1/3/5/3/135329923/wulaki.pdfIn PDF document text
    • https://cdn.sqhk.co/kojanakif/GGlgfhd/lofedibakovofaki.pdfIn PDF document text
    • https://luvabuzizav.weebly.com/uploads/1/3/5/2/135294148/7668861.pdfIn PDF document text
    • https://cdn.sqhk.co/jawutuwek/ThaEuI0/mtg_secret_lair_extra_life_2020.pdfIn PDF document text
    • https://zosotise.weebly.com/uploads/1/3/5/3/135393527/bukibom.pdfIn PDF document text
    • https://nawivavunof.weebly.com/uploads/1/3/4/6/134669961/papoxokebitalub_natusarevoluled.pdfIn PDF document text
    • https://cdn.sqhk.co/mosugukasiba/Arehfgj/29731840531.pdfIn PDF document text
    • https://wejigewaja.weebly.com/uploads/1/3/5/4/135400860/9336737.pdfIn PDF document text
    • https://riwurarelix.weebly.com/uploads/1/3/4/4/134484082/zosarepaver_nataja_lagavozon_kesan.pdfIn PDF document text
    • https://cdn.sqhk.co/xonivozew/jiSgfyM/92753619639.pdfIn PDF document text
    • https://zemapefim.weebly.com/uploads/1/3/4/4/134485651/7563da6.pdfIn PDF document text
    • https://cdn.sqhk.co/romilononove/GZNphbg/29266395233.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/pidufozu/wixofawososawivopugoxap.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/cocoon_seidenschlafsack_travel_sheet_silk_ripstop.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/50317076267.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/37677761848.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/67866012826.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/android_video_editor_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/riveduvulogeligovumil.pdfIn PDF document text
    • https://s3.amazonaws.com/bubisifapagefe/dubikafugijijalarujimobe.pdfIn PDF document text
    • http://muzoxed.rf.gd/mutevetubavazini.pdfIn PDF document text
    • http://pitefabe.epizy.com/xuxitifufagurowowixexav.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_off00010be5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE5 4980 bytes
SHA-256: 9566df0b4a797621a8e257d1833418110fbcec8594210b67b791d0ea86edf1e0
font_01_sfnt_off00011ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CCC 10804 bytes
SHA-256: 77119586abbeeb39df45b22734bc60447820b37a956d306c7bd9f5b5b4d3916a

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