Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bcde0b9a9a6d066…

MALICIOUS

PDF

86.1 KB Created: 2021-06-26 01:07:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 25569fcfa89b4a1874427f3b52f51683 SHA-1: f2fd264d306e46d567d5b861016da8cd504ac737 SHA-256: 7bcde0b9a9a6d066f6176d11d908d410b46d417027664e881e884a2a1d8fd6f0
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. The heuristics reveal a link farm structure pointing to compromised WordPress sites, suggesting an attempt to trick users into downloading further malicious content. The presence of embedded URIs and the overall structure are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fe0bc7f660---boxukejumojelazezu.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f4e7e3bae3---fapogomikabamadimejan.pdf
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1609834b570ef5---74643457594.pdf
    • https://aonetreks.com/uploads/file/91732575752.pdf
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/1b7e92984cd79caebc48096e70a6a14a/73050546572.pdf
    • https://amiablediamonds.com/wp-content/plugins/super-forms/uploads/php/files/dcf15f317e4763de0ccf7dd6eef8aa5f/vulafegarodivorelodidu.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/l2hrujnp7lhtt2i50a9gbekjr6/todige.pdf
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/4244bbblve3kqkkt7b8nu1q8g3/87039071570.pdf
    • http://cetinelektrik.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8b6b48cf1a---51940658741.pdf
    • http://www.marcado.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a2fffbd10a9---48366874305.pdf
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aa174386e36---zedaralomu.pdf
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/k2hetj4j8h431048bbkfqcm7n7/mopunafevaj.pdf
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d52243913d8---kevasexunozuxubufafegis.pdf
    • https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a91c89152f9---31541869907.pdf
    • https://rybczewice.pl/userfiles/file/kuvipunuvejerokew.pdf
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/1609fb515ed550---87876585788.pdf
    • http://atcotourismtravel.com/userfiles/file/woxajisamisi.pdf
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/7e3b5db7c4f4cb2c92637f95c8caa6f6/bowarozumomuwuwofeko.pdf
    • https://vizzzio.ru/wp-content/plugins/super-forms/uploads/php/files/d2d6a0680e8eed80f379bf22d484cf6e/7087985800.pdf
    • http://ifaistos.reality.gr/~triantaf/images/file/ziwifomevub.pdf
    • https://resulgame.com/calisma2/files/uploads/42957809276.pdf
    • https://shared401k.com/wp-content/plugins/super-forms/uploads/php/files/7d6391c2025c6c30f71131b231529e96/65598705993.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=maths+olympiad+sample+papers+for+class+5+free+download+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_off0000ecc1.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xECC1 16792 bytes
font_01_sfnt_off000104d8.bin
af681120e9ef5ae1eb5363422a3ae1b4d00b83183ce48891ad8060e486972396
pdf-font-stream PDF embedded font (sfnt) at offset 0x104D8 11212 bytes
font_02_sfnt_off00011efe.bin
2a2fc8023a80b0dc1fb9df00f9f3ecbe6db2e4b9ef6046371e483128a5734c37
pdf-font-stream PDF embedded font (sfnt) at offset 0x11EFE 16804 bytes