Malicious PDF — malware analysis report

Static analysis result for SHA-256 0213579052619ced…

MALICIOUS

PDF

86.9 KB Created: 2021-03-26 06:43:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 49abfa331b575fdae327d4f558b7083c SHA-1: de9bd17dfb7b0bee0355ce9ac23e196120211f64 SHA-256: 0213579052619ced90e194e11581253ca3f6d269e696097da40eb209125d131e
126 Risk Score

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 0.9990

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://xajibur.ru/wix?keyword=why+i+left+goldman+sachs+pdf PDF link annotation
    • http://edevletorg.com/mikuni_bst34_carb_manual89408.pdfIn PDF document text
    • http://leqqurint.online/what_six_characteristics_do_all_living_things_have_in_commonin1aq.pdfIn PDF document text
    • https://mavekajokirusap.weebly.com/uploads/1/3/1/4/131437454/bd0b2f616ba8c.pdfIn PDF document text
    • https://kotasixunepa.weebly.com/uploads/1/3/0/7/130776076/buvugibod-vimuf.pdfIn PDF document text
    • http://plusstore.pro/retawunikenqch5.pdfIn PDF document text
    • http://silvanozito.online/17400807694xrddg.pdfIn PDF document text
    • https://gomamuna.weebly.com/uploads/1/3/5/3/135304292/jegutawopizi.pdfIn PDF document text
    • https://kuxodebareku.weebly.com/uploads/1/3/4/0/134042390/1546935.pdfIn PDF document text
    • http://myirn.icu/95228383356y26p1.pdfIn PDF document text
    • http://sokolov.fun/what_does_organization_chart_mean_in_businessey8gf.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/do_craftsman_jacks_have_a_lifetime_warranty.pdfIn PDF document text
    • http://getyourcredit.info/3d_text_logo_design_software_free_downloado9yyr.pdfIn PDF document text
    • http://zoomita.fun/computer_programming_courses2nbjz.pdfIn PDF document text
    • https://sabigojepesadiz.weebly.com/uploads/1/3/2/8/132814096/miwotebosinekaf-zavufegurovare.pdfIn PDF document text
    • https://jerepubiz.weebly.com/uploads/1/3/1/6/131606505/selasurerarurikab.pdfIn PDF document text
    • https://zadilomevesijob.weebly.com/uploads/1/3/4/5/134581884/tatoxem.pdfIn PDF document text
    • http://kogowetek.getenjoyment.net/anesthesia_technician_book.pdfIn PDF document text
    • http://jesibijifinuz.mywebcommunity.org/29310798725.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/2298feb1-f69c-4f36-ad2b-6ccc9bf52038/75037851847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0220b9bf-3f8b-47a3-813b-8ef06d929cb8/26422092445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b08015b2-97a1-4cf3-8ea4-e52be960805a/motorola_surfboard_sb6121_no_lights.pdfIn PDF document text
    • http://dapibudajemuk.atwebpages.com/how_to_fix_a_water_heater_pilot_light.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ea05d22-5daa-4f7c-a7d3-dcda37824aac/kawasaki_small_engine_dealer_login.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FA 5376 bytes
SHA-256: 683cdfa347a531ec9e2d254f2d72bbede208bad6b25c323248d13d96c77bb2ca
font_01_sfnt_off00011833.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11833 11612 bytes
SHA-256: e7ed8113c3b491f9b801bd84cc1669e8062427424dd68b44a78ce3ae9cce6a31
font_02_sfnt_off00013fb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FB0 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34