Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c9e8d6ea9df60d1…

MALICIOUS

PDF

82.7 KB Created: 2021-09-09 17:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 2b1cdda9e7aba65f41734e01c4ee4f19 SHA-1: a1def7969710ffd44699d07339ee7c2aefcc4946 SHA-256: 9c9e8d6ea9df60d1524579d89ff707902dee686f4f7a4fccf81ee1c2fda25231
174 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics as malicious, including an ML classifier and ClamAV, and exhibits characteristics of an advance-fee scam. It contains embedded JavaScript, suggesting it may attempt to exploit vulnerabilities or redirect the user to malicious sites. The document body is heavily obfuscated, but the presence of external URIs and the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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 http://scuderieverdina.it/scuderia/userfiles/file/negumeliginetebakupoxaniz.pdf
    • http://idrogastermoclima.it/Utentifile/FCKPage/file/safifawoxijusunefaviri.pdf
    • http://portaldeaquidauana.com.br/ckfinder/userfiles/files/marovepazivur.pdf
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/161356a7c9f145---67976442957.pdf
    • https://abisspaandboutique.com/nbloom/fckuploads/file/50450619713.pdf
    • http://lsphc.com/userfiles/file///zujuv.pdf
    • http://flyingkirin.com/uploadfiles/file/05021804235.pdf
    • https://ls-machinery.com/uploadpic/files/202109080628581798.pdf
    • http://xutricolor.com/uploadfile/files/pixugel.pdf
    • https://tasleemdubai.com/userfiles/files/63712382560.pdf
    • http://cortabellanews.com/userimages/ribemopixidifawifetowi.pdf
    • http://jd6618.com/jd6618/file/2021-9/file/LwpCms2021_09_08_10_24_47_8118.pdf
    • https://stl-log.com/htdocs/cljr/data/files/vosegaferakobod.pdf
    • https://aaaxxion.info/images/file/xawisunazoxot.pdf
    • https://biserica-izvorul-tamaduirii.ro/files/40371076336.pdf
    • http://dekoblickfang.de/userfiles/file/45941520928.pdf
    • http://k-yoga.org/file_upload/spaw_upload/file/20210905161200.pdf
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/4859195576.pdf
    • https://anakaygame.net/calisma2/files/uploads/kenuxatikuvidijajefoze.pdf
    • http://ameshamagazine.com/js/upload/files/49857728690.pdf
    • http://mikomisushiwc.com/uploads/files/53000162095.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/161343f3a90797---sevogilu.pdf
    • http://staceyasp.com/UserFiles/file/sojawotokavabewowo.pdf
    • https://linhngapt.vn/upload/files/16890457279.pdf
    • http://kanoonkaraj.ir/dbmanager/filebank/htmlgallery/file///jezoforowonejinadapeb.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=free+redeem+codes+ps4+2020
    • 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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfa1.bin
6c927505810604f7456dac3b844896aae64c1337963a59e9412aaf574c05b6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDFA1 10472 bytes
font_01_sfnt_off0000f76f.bin
b3428094ae747e019a5a81e6dfa6765b8593809d88320e6993bec26d66c6120a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF76F 17460 bytes
font_02_sfnt_off000124ff.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124FF 16792 bytes

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