Malicious PDF — malware analysis report

Static analysis result for SHA-256 02654b56dfdd3630…

MALICIOUS

PDF

87.8 KB Created: 2021-09-20 09:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d05d7ebc9edf995b7811b45aabe01264 SHA-1: 0e66bb9367cef70f21be245658251196a4475f01 SHA-256: 02654b56dfdd36302e0b4e9530f75c55413948207c14b25fb3741088e6cd70fa
196 Risk Score

Malware Insights

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

This PDF is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of an advance-fee scam. It contains numerous links, including one pointing to a compromised WordPress upload storage, designed to lure users into downloading further malicious content. The document body is heavily obfuscated, preventing a detailed analysis of its specific scripting behavior, but the overall structure and URL patterns suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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 https://laborke.ru/uplcv?utm_term=photoshop+documentation+pdf
    • http://xn--spreewaldpension-lbben-9lc.de/meineBilderAlbertGrundschule/file/parivasedevabuvagapi.pdf
    • http://langfordfinancialservices.com/userfiles/files/12246785491.pdf
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/48c5eae58022b073e0ceb2bd6e84a808/68613517279.pdf
    • http://www.awakohchang.com/image/upload/File/aniposawu.pdf
    • http://igs.compcierge-asia.com/ckfinder/userfiles/files/80622210342.pdf
    • http://nachhilfeschule.havonix.com/ckfinder/userfiles/files/lunofudewuxijiged.pdf
    • https://cplastik.com/data/cms/file/39534314074.pdf
    • http://www.smwiarus.pl/ckfinder/userfiles/files/pitumewadapi.pdf
    • https://bocion.com/ckfinder/userfiles/files/vuzugajedexixunitipo.pdf
    • http://pogotowienaukowe.com/Upload/file/kowekevopupivuluvapalenag.pdf
    • https://www.moxiclear.com.au/application/third_party/ckfinder/userfiles/files/56572934415.pdf
    • http://alacarte-husum.de/userfiles/file/bowuwekupovibebuxijupite.pdf
    • http://rulife.ru/ckfinder/userfiles/files/84501749574.pdf
    • https://fullprotec.com/ckfinder/userfiles/files/30626480235.pdf
    • http://wlpp.net/images/blog/file/varomeme.pdf
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139206a7798d---duzodirilodisujugunesewuw.pdf
    • http://shanghaiqingchen.com/upload/files/xofezifu.pdf
    • http://canissapiens.com/images/uploads/file/42358766981.pdf
    • http://bxbrdh.marketsearching.com/upload/files/zemodarenovikisujesododeg.pdf
    • http://koopmankennedyfeller.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/garorinimaduvoworutu.pdf
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/4e02de79f8d4dc3b9b4a791958fb34b4/givaxojipilo.pdf
    • https://smgbid.com/ckfinder_userfiles/files/55613279830.pdf
    • https://tractorpulling-emmeloord.nl/upload/file/58998311472.pdf
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/161408182aa54a---74362452305.pdf
    • https://aimara-bg.com/userfiles/file/70132331600.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://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_off0000f027.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF027 16792 bytes
font_01_sfnt_off0001083e.bin
ce3c9c23f675d2b496c304170eb97831fee2f43b92998f79f05b30a11419cda9
pdf-font-stream PDF embedded font (sfnt) at offset 0x1083E 10840 bytes
font_02_sfnt_off0001211e.bin
34fe4a57474685fae562d99b146e810a3b17139e38aa5468ccf1e4b56dbebcfa
pdf-font-stream PDF embedded font (sfnt) at offset 0x1211E 18508 bytes