Malicious PDF — malware analysis report

Static analysis result for SHA-256 002874980245172c…

MALICIOUS

PDF

107.4 KB Created: 2021-07-31 15:50:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: dad472901338c6fd8b2f23c0f20c949f SHA-1: 32fa28d929bbede1a6fda0406ca6a70f126450bf SHA-256: 002874980245172c22fac3bd63326e9a19a8113abee066e138b45d0c8afd7a2d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to various domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and unreadable, but the presence of external URIs and the overall heuristic profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

Heuristics 6

  • 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.
  • 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://oniceh.ru/uplcv?utm_term=liderazgo+de+excelencia+miguel+angel+cornejo+pdf PDF link annotation
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/061ah2cleqil3kscdkoah744j7/supozol.pdfIn PDF document text
    • https://growmytruck.com/wp-content/plugins/super-forms/uploads/php/files/d9ffecb22eb3175f76ad7ed32834e229/sarono.pdfIn PDF document text
    • http://iziusb.com/userfiles//file/davipefalomarefomanawujad.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/78634832090.pdfIn PDF document text
    • http://techbis.pl/files/file/mivezowajevijezodot.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160716240ab20b---71217149692.pdfIn PDF document text
    • https://topclassgreenery.nl/images/file/99710507561.pdfIn PDF document text
    • http://cancunday.com/travela/img/files/89821709215.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/4ee2f02a14eb2658fbf7268af6ef0c69/lozaneja.pdfIn PDF document text
    • http://matsonconstruction.net/userfiles/file/3021168752.pdfIn PDF document text
    • http://hungthanhauto.com/luutru/files/54152753579.pdfIn PDF document text
    • http://nuestratierrapremios.com/campannas/file/98873526012.pdfIn PDF document text
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/403e15be5cb3ae3cff619d97477d9b4a/43996340770.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/d76e27fea268db203f9ef0992bfbd1b4/dibidoworazuvebisotewe.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0a3377f11e---20780470628.pdfIn PDF document text
    • http://poslovniimenik.net/firme_data/files/89091239270.pdfIn PDF document text
    • http://yilip.net/userData/board/file/susosumosutimog.pdfIn PDF document text
    • http://zulaikhatextile.com/userfiles/files/tumemigadujajojizitakusa.pdfIn PDF document text
    • http://scoutpate.com/userfiles/file/nawusefaposumamafarowal.pdfIn PDF document text
    • https://mednet.mk/public_html/upload/userfiles/file/pogukorotepu.pdfIn PDF document text
    • http://trimblehighalumni.com/clients/84492/File/62701125563.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e7432a5c470---82911427752.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/83206956402.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00013714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13714 20464 bytes
SHA-256: 79b46436c00963846658d7dbd9598ef0f1a288c0c100c8eb2e156fd2fbf71491
font_01_sfnt_off00016b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16B3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018356.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18356 11048 bytes
SHA-256: 660f3393a361c0cc986ff1a4aec834f275d5602b5259266d50797250b502eff8

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