Malicious PDF — malware analysis report

Static analysis result for SHA-256 da32715fa60dfd59…

MALICIOUS

PDF

82.4 KB Created: 2021-07-10 10:07:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 314fd194d90439f5e1be73eb6100a40e SHA-1: e8537481c84888c36ea9c0d54246ec4a42cfa486 SHA-256: da32715fa60dfd59cb7d2e75703fd1b681aafe686eb77c81139d14ef6a35089e
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to disposable hosting sites, characteristic of a link farm designed to distribute malicious content. Heuristics indicate it's an advance-fee scam lure, likely aiming to trick users into believing they've won a prize or are due a parcel, which is a common social engineering tactic. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://thehawthornnyc.com/wp-content/plugins/formcraft/file-upload/server/content/files/160871b95a2943---dixades.pdf
    • https://searchkar.com/ci/userfiles/files/subotesanoxulijudonul.pdf
    • http://for-rent-antwerp.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2418f5311d---xevirim.pdf
    • http://budohurtsa.pl/userfiles/file/begabimafamor.pdf
    • http://cityhigh78.com/clients/2/2d/2ddbae4fb74c169819b3574d76e4e264/File/66501846988.pdf
    • http://pi-consulting.ch/download/41755391343.pdf
    • https://almondzwealth.com/administrator/imagetemp/file/xugetevivagezaf.pdf
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/a4dc7bfe45a0b883eb76d821bed7bbbd/34797609491.pdf
    • https://www.emmabowman.com/wp-content/plugins/super-forms/uploads/php/files/74e45869e12e4a3575dcb2c02e9ac32b/50134379280.pdf
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607649f1468ed---29805372047.pdf
    • http://bukharajohnscreek.com/sites/default/files/file/waduvujolofixikomagulugow.pdf
    • https://cottingham-group.com/cufiles/files/xuluwatumesupekemowo.pdf
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/bb4blb74m26l4eak7tlmjc4i5c/49875952500.pdf
    • http://bellsazshihtzu.com/clients/878694/File/35301673321.pdf
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160786bd797db8---62498732558.pdf
    • https://leavingcare3plus.ch/userfiles/files/83494157208.pdf
    • http://happypalettebnb.com/CKEdit/upload/files/77685387251.pdf
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16088dc337fcda---63908053347.pdf
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3d36f9ecded953d7ad0a23531aeee9b2/62186893385.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/20aee774e3eeda1769fe4332a185df9c/jewonijedejige.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/1607285afe3ebd---kediriwudifiwivasedixet.pdf
    • http://www.webtony.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160e292db61030---dilibupezodowerajam.pdf
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/10a3e2351220068d09d58e14f66ae717/resupavariremimarigij.pdf
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/afjh3ag5hjkbtc3cr32n3apelv/vefawoxapan.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=if+clause+c%2B%2B
    • 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_off0000e301.bin
6d0e483ac0dc9f62313d49fa2b374ecabfaecfdb288d1cf2a965a1615a2bad9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE301 16832 bytes
font_01_sfnt_off00010ea1.bin
874525a045e2bc4ea444296c3cd73b1430e5438c5ed3e948a0e6394c0d25c769
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EA1 9868 bytes
font_02_sfnt_off00012481.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x12481 16792 bytes