Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ec3e8baea1b1fd1…

MALICIOUS

PDF

84.3 KB Created: 2021-03-10 07:41:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 319cb9750a3515568ce36b198ce48b4f SHA-1: 7948ebee2799e51096282972c32de0be93c81952 SHA-256: 3ec3e8baea1b1fd12302c4db965fa0bcc194b29c7af7e44cc7cc93465ab04dfb
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing or SEO spam campaign. It contains a large number of external links, many hosted on disposable domains or free hosting services, suggesting an attempt to manipulate search engine results or direct users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://midufefew.ru/wix?keyword=claudette+colvin+twice+toward+justice+pdf PDF link annotation
    • https://vegebawijinewer.weebly.com/uploads/1/3/2/7/132740558/doviwezokepa_jutoburef.pdfIn PDF document text
    • https://wezenazuzive.weebly.com/uploads/1/3/4/7/134764498/18771.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/aFERMp7/download_stick_of_titan_2.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/6IjcjfA/32999175951.pdfIn PDF document text
    • https://cdn.sqhk.co/doporaba/wgfO62N/guitar_flash_2._0_custom.pdfIn PDF document text
    • http://vewigufirenaw.22web.org/vebemiwanaxinu.pdfIn PDF document text
    • https://dalujukonuxuda.weebly.com/uploads/1/3/1/1/131163933/suduza.pdfIn PDF document text
    • https://cdn.sqhk.co/genonitag/eGys0eL/wedding_makeup_artist_salon_game.pdfIn PDF document text
    • https://rixowumunek.weebly.com/uploads/1/3/5/3/135330445/4899440.pdfIn PDF document text
    • https://cdn.sqhk.co/ledivure/gUFjjnA/baleful_meaning_in_marathi.pdfIn PDF document text
    • https://cdn.sqhk.co/vawadawuleja/gYnJibD/42274197820.pdfIn PDF document text
    • https://vawudida.weebly.com/uploads/1/3/4/8/134890241/1339056.pdfIn PDF document text
    • https://cdn.sqhk.co/dikapagoloza/Phd2Wtu/90607397091.pdfIn PDF document text
    • https://cdn.sqhk.co/zeputefilu/75iheVE/the_tiny_bang_story_walkthrough_part_5.pdfIn PDF document text
    • https://cdn.sqhk.co/kokizoxujojo/ti0jajf/does_screen_time_affect_apple_watch.pdfIn PDF document text
    • https://putajomarope.weebly.com/uploads/1/3/1/4/131437676/8bb1f35e5c9250e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://788ae96d-7a4f-4726-91a9-07bb742fb3e7.filesusr.com/ugd/97aff7_daaef55f5375443bb7ecf22c95020301.pdf?index=trueIn PDF document text
    • https://db532842-334f-4efb-8993-e67ec8f20ff5.filesusr.com/ugd/bc5be3_b9a01d3b9eae4e9386c143b836679b19.pdf?index=trueIn PDF document text
    • https://874c0fd6-92eb-497b-905f-dc7ca4d2e287.filesusr.com/ugd/5ca7d4_a30a189d2ada45faa4c57edca80338c0.pdf?index=trueIn PDF document text
    • https://13a7c488-548c-4b48-b567-d2b0b9a3e1de.filesusr.com/ugd/85d67f_c3f432958c7a44289b0f8abc289baca1.pdf?index=trueIn PDF document text
    • https://45ed8376-e832-497f-ab20-0a31924dc5db.filesusr.com/ugd/4b7290_b68f234dd70c464d98b13fc270aab75a.pdf?index=trueIn PDF document text
    • http://vuropomap.epizy.com/transactions_essential_english_language_skills_guide.pdfIn PDF document text
    • http://javirukegeg.rf.gd/61353349697.pdfIn PDF document text
    • http://wuluveviwibe.epizy.com/53189094818.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://scripts.sil.org/OFLIn 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_off0000f7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 5284 bytes
SHA-256: 722833592b9416337f7dbe8ee2e34e598419731e6dc510a2c0db9d8cf346c283
font_01_sfnt_off000109eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EB 10588 bytes
SHA-256: b59bc3c601ad08ef6387e2350efab7d4f103aa727f19263fe25e005aa982ea5a
font_02_sfnt_off00012e70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E70 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

Open this report in the interactive analyzer, or submit your own file for analysis.