Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ddaa4485dcd5d8…

MALICIOUS

PDF

69.9 KB Created: 2021-03-13 16:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 431a28cc1a40572e0b115268c28a541a SHA-1: cc18082a4c16bb632d575322a6f22b201735cc88 SHA-256: 76ddaa4485dcd5d8101377325c28dfbf4570bb9d00cb41e1fd226b239f09e238
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/123?utm_term=laravel+email+template+image PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381988/normal_603b7bd1d12da.pdfIn PDF document text
    • http://copyright-notice-ig.com/1570545216535ywu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487618/normal_5fcd1a1303c62.pdfIn PDF document text
    • http://redtea.space/kuvotelonasakepiteboviku1m7lo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417675/normal_60098e65a257a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450042/normal_603dde99997a4.pdfIn PDF document text
    • http://wijasagasipode.getenjoyment.net/xalovetesibififusig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428331/normal_6010027e16d46.pdfIn PDF document text
    • http://itfamily.pro/355960426036ki4t.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7179dc9-8f5c-4c34-b165-ab1a8a5c9032/zarefazijomurexuket.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25769a17-598c-4fc5-a6e6-f682252977bb/behringer_xenyx_1002b_mixer_dimensions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6cb81a27-2550-4758-9f4b-252d75d57f8c/oracle_database_12c_pl_sql_programming.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b271e6a-6b46-4d3d-b45d-64796dcf6432/likenivit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e488f81-4fdd-4e82-b08a-1d5ae587a915/42184997850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b52bc0e-f3c2-4838-aba9-9f96606fb33b/25976201812.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9fd5d3d-f87b-4c29-a683-fb7b7fd4398a/ferelazufo.pdfIn PDF document text
    • http://jajogagek.atwebpages.com/what_do_you_mean_by_human_development_index_class_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cae4c208-b0c6-477d-933f-470f380d00f0/fivegojamebajerowuvela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60128dc5-7797-4460-8a3d-60fbd2be533b/where_can_i_read_the_quran_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/321584a7-17e8-497a-aac3-c681d49a13ef/jomebanarogisejosinimire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8f6302c-787c-4124-b872-82d6fac3b5b5/golden_sun_dark_dawn_cheat_codes.pdfIn PDF document text
    • http://wadoromutisagar.myartsonline.com/vovapodawapukixasaf.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B2 4960 bytes
SHA-256: 6aac26425c8393b66df282f3377e213291dee98ddced46ea1abfd1d6e6405576
font_01_sfnt_off0000e38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38A 11356 bytes
SHA-256: a5c89918393c16409d168a92c21033acae6474fb01e5c44996f9dd1c7e5961de

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