Malicious PDF — malware analysis report

Static analysis result for SHA-256 354937feacb017f4…

MALICIOUS

PDF

82.8 KB Created: 2021-06-27 13:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 9e584e86dab113f177f7202489319b3c SHA-1: 2a22adaee3617801421324a0ec17d386289f033d SHA-256: 354937feacb017f4bbbbf517c12b1727ffb3cdace0990bf776be01674e9f41f1
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a link farm pointing to compromised WordPress upload storage and other potentially malicious URLs, suggesting it's designed to redirect users to harmful sites. The presence of urgency language further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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
  • 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://ergo-logo-bamberg.de/userfiles/file/bemifanowapabudo.pdf
    • https://quaint-house.com/images/blog//file/94838204854.pdf
    • http://botosani.ro/img/uploads/file/pobapu.pdf
    • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/566c6cb0b62c206e2c08b6484d456713/mivub.pdf
    • http://stavebnevyrobky.sk/www/upload/files/wupisaloravizototilon.pdf
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/328153ed4ea368139631e5d062c32297/15175086816.pdf
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608ec5b2b73e0---5880551304.pdf
    • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bd5f5fef504---vopagawobaloso.pdf
    • http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16079e30b0350c---50634001315.pdf
    • https://tskrea.com/userfiles/file/73275088019.pdf
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607a28e407cb7---sutav.pdf
    • http://drive4smilesontario.com/clients/e/ed/ed023a0734c265ca673a92d1d81de675/File/64519525432.pdf
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/c8a0e1b07aebfa611ea069a63349463d/jilunig.pdf
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/b1350d5e6ffe86c96aa7ff8300913861/81302781770.pdf
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160795f0e46220---pemerowez.pdf
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160925f2dd2324---59632723408.pdf
    • https://agentcctv.com/userfiles/file/50309874660.pdf
    • http://nhsclassof77.com/clients/c/ca/caa0b9827732345dad94809623212052/File/97779426777.pdf
    • http://www.saito-ken.jp/userdata/file/20415219608.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160914175ad7c1---suluxiralibipanadaru.pdf
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a684870b309---ruxukabesojili.pdf
    • http://burattinojatek.hu/userfiles/file/64136176218.pdf
    • https://akapacha.com/userfiles/file/bubibefokokof.pdf
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/etfcri0mmlk9l8v8ku4o792m6p/70837375470.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=why+should+we+hire+you+in+our+company+answer
    • 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_off0000e08e.bin
243e91249c51c60de1308a32426da128c83835d66dcf5258697f3a9ba18acdd9
pdf-font-stream PDF embedded font (sfnt) at offset 0xE08E 17024 bytes
font_01_sfnt_off00010c69.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10C69 16792 bytes
font_02_sfnt_off00012480.bin
4debbecd7da18d148c2598ba1c0e9186a16b370f0a8a9c4a97abe618b40d6a39
pdf-font-stream PDF embedded font (sfnt) at offset 0x12480 10972 bytes