Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ee31695e9c69692…

MALICIOUS

PDF

79.2 KB Created: 2021-03-17 04:41:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9507b7445a65c87ff27b531ca84a0e0 SHA-1: 9d0d6d04291bcc7900ab55250f7f6fcd0615f88e SHA-256: 0ee31695e9c696922e48d1a6ba2d30e4cb0cffa7be3cc28acea90cabb4b86d6d
172 Risk Score

Malware Insights

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

The PDF contains multiple external links, with one pointing to 'https://baarspo.ru/wix?keyword=adopt+an+angel', suggesting a phishing or malicious redirection attempt. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, further supporting a malicious intent. ClamAV detection and ML classification confirm the malicious nature of the file, likely used as a lure for initial access via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 7

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/wix?keyword=adopt+an+angel
    • http://wedurorokim.mypressonline.com/filutewujigagofe.pdf
    • http://wejuzofibab.medianewsonline.com/36573845611.pdf
    • http://saduzemed.mypressonline.com/vekifu.pdf
    • https://zidovularirijap.weebly.com/uploads/1/3/4/7/134718784/xosoderopixis-wigarupezeba-modifisofolum.pdf
    • https://kojelujozifani.weebly.com/uploads/1/3/1/8/131856125/1b78b772.pdf
    • https://cdn.sqhk.co/donewipimep/U0yI2gj/bulumij.pdf
    • https://dudosixe.weebly.com/uploads/1/3/4/3/134323580/6860091.pdf
    • https://gelasinez.weebly.com/uploads/1/3/4/7/134763890/sowejokatuwoka_tijaxugon.pdf
    • https://cdn.sqhk.co/libobivole/gcZjcgc/wumoropusegikejo.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/35023371-24f4-4621-8bef-ff835274a442/soccer_betting_strategy_that_works.pdf
    • https://uploads.strikinglycdn.com/files/cb7debdb-1399-489a-9380-dc69862d8600/what_is_the_average_salary_of_a_compliance_officer.pdf
    • https://uploads.strikinglycdn.com/files/77e18dbf-1144-4c99-ae62-a70b4be78e5f/boxupigupod.pdf
    • https://uploads.strikinglycdn.com/files/77fe15f8-5391-4154-b670-eee167be696d/the_hobbit_full_movie_in_hindi_download_720p_bolly4u.pdf
    • https://uploads.strikinglycdn.com/files/7fea9931-2e43-43fd-a764-b97e4cd3dbae/peavey_bandit_112_user_manual.pdf
    • https://s3.amazonaws.com/wukara/carsguide_ford_ranger.pdf
    • https://uploads.strikinglycdn.com/files/5d117c06-5ed7-4467-b1b1-e37e09abb33d/whirlpool_washer_wtw5000dw1_owners_manual.pdf
    • https://uploads.strikinglycdn.com/files/e72bdc6b-177d-49dd-a6a0-5f1898b7d8bd/how_the_stock_market_really_works.pdf
    • https://s3.amazonaws.com/fidefofudi/which_country_has_the_bluest_eyes_in_texas.pdf
    • https://uploads.strikinglycdn.com/files/ddd14a09-89d6-4719-b56a-129b3d460e4f/24380614524.pdf
    • https://s3.amazonaws.com/faluzotixupi/80197660439.pdf
    • https://uploads.strikinglycdn.com/files/9d1514c2-77b4-4e07-86bc-209093be33de/telefowafitiriguzalu.pdf
    • https://s3.amazonaws.com/jivuxo/how_to_tub_clean_on_lg_washer.pdf
    • https://s3.amazonaws.com/jipowumat/kikirutiruxolavi.pdf
    • https://uploads.strikinglycdn.com/files/ab50990e-f689-408b-b586-fb51a735d76c/zepomanumi.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7b8.bin
ac23b1276d62a03a389cb8f0e4ce74badc02bf3f04a6dcb79c52ae018c0160bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B8 4840 bytes
font_01_sfnt_off00010844.bin
13af3b1d1d3654bf7eb5188051c3cae337bdac3ad477e5c4a43c3738c4aa8aa4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10844 11568 bytes

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