Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc1e7ef737fba7b5…

MALICIOUS

PDF

85.6 KB Created: 2021-07-14 02:19:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1acabdc2cebfb178373d6a3040e460fb SHA-1: feff6f49b31ea90c0b80d80150835f46dbc4b2e2 SHA-256: fc1e7ef737fba7b50e85a435364a753248cf136133aeb377f3ddb7c0485aff7a
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan variant. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting it functions as a link farm to distribute malicious content. The presence of urgency and callback lures further supports a phishing or scam-related attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890a130effe---maxakojezakaj.pdf
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/6a57c8d74df9a5f796fe09feb134fe97/dataledewodenogav.pdf
    • http://sfera-vlad.ru/img/file/78691430903.pdf
    • https://alphaveneers.co.uk/wp-content/plugins/super-forms/uploads/php/files/d049ababd932a183e57fab6d9dcafb96/zetosikin.pdf
    • https://hr-serdahel.hu/images/file/nojovalirenese.pdf
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/26a5e9c307f30cbd9a4814036c3a510c/pumiboxisexejakuwoxo.pdf
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/v88k622i2uu1qjd0602b1jqka3/14275721873.pdf
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160807b678d662---80976691695.pdf
    • http://fine-trading-knotwork.de/uploads/media/24486923334.pdf
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/64sp7s52nbmdu2uo71di24pm80/20369973952.pdf
    • http://budoprojekt.eu/obrazy/file/56014053618.pdf
    • https://tidurmalam.com/contents//files/64400530095.pdf
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/3c28e2f9235adca5152e410957326a65/60535767865.pdf
    • http://sisparts.pl/zdjecia/fck/file/78009621209.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/d6727b867e026ebefc25b0fa862f884b/555963765.pdf
    • https://vresponse.net/userfiles/file/zerede.pdf
    • http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084597b44562---naxusavujozegifeker.pdf
    • https://apoiotelecom.com/imagens/img_fckeditor/file/11835260890.pdf
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16093bb8466059---26325272602.pdf
    • https://kede.org/userfiles/file/wapazixebozujur.pdf
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/9ce0d2e0f86f23d22f6a2091978b941b/wumusegufesemop.pdf
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adff7751c25---winijojelozimodapu.pdf
    • http://julieesteban.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccfa22183d---bisoliluzugevofosug.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=get+out+on+bail
    • 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_off0000eda2.bin
031e21a250b25d22253c91f22e813e92492572dda2b471d3126f06c6a809162e
pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA2 16772 bytes
font_01_sfnt_off00011929.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x11929 16792 bytes
font_02_sfnt_off00013140.bin
d5bf01b82ed0aef2d0b595b250520abc08bb8d8ba4a17d934e8a5d994b73113f
pdf-font-stream PDF embedded font (sfnt) at offset 0x13140 10112 bytes