Malicious PDF — malware analysis report

Static analysis result for SHA-256 007d0e5c2f2daa9a…

MALICIOUS

PDF

92.5 KB Created: 2021-04-07 15:00:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f1151e1607e31b1425500cb37b7b06de SHA-1: 90dc31d4f951194e5859a0853220f157c3787c2c SHA-256: 007d0e5c2f2daa9a93e249924ce2f497a3bea06ede625c0ae3ebb11c2966a92d
186 Risk Score

Malware Insights

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

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 0.9991

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://dugedepap.ru/wix?keyword=lifetime+fitness+north+austin PDF link annotation
    • https://cdn.sqhk.co/durotula/IHjcjhf/paper_horse_racing_tips.pdfIn PDF document text
    • https://cdn.sqhk.co/xumesapaxoku/cijicgh/19520775820.pdfIn PDF document text
    • http://akillidestekbasvuruformu.online/vuraf22b7h.pdfIn PDF document text
    • http://olivamebel.com/1128988615621h01.pdfIn PDF document text
    • https://cdn.sqhk.co/xidizizo/pUNutq5/hanuman_chalisa_song_mr_jatt.pdfIn PDF document text
    • http://itawegan.space/cfa_level_1_20184minc.pdfIn PDF document text
    • https://cdn.sqhk.co/tokarikadez/Fijidjf/7630856541.pdfIn PDF document text
    • http://stixlife.info/karavusatubumesuromturg9.pdfIn PDF document text
    • https://cdn.sqhk.co/tomubozes/beFihha/cooking_master_boy_watch_online_free.pdfIn PDF document text
    • https://devigafaviv.weebly.com/uploads/1/3/4/6/134698058/6490af10516.pdfIn PDF document text
    • https://vasiwamalag.weebly.com/uploads/1/3/4/0/134012587/9ab3b3e4.pdfIn PDF document text
    • http://obsluzhivanie-kompyuterov.moscow/fogaxofo4urd8.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/b5076916-3ff9-4554-9440-378325001612/bunn_cwtf15_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31086703-e71f-40d8-95f3-591be7be6cc7/xovaxe.pdfIn PDF document text
    • https://113c517c-d7b0-4b36-99d7-6722bcb7ef36.filesusr.com/ugd/8e66a5_9cc662c7554245eaa694a8b16029c907.pdf?index=trueIn PDF document text
    • http://movebuze.epizy.com/cctv_video_file_converter_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e214b95b-6bd6-4328-a1c1-47111f37aa3b/zilesifimif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d84158f1-4945-4049-8503-8ccb0adb7d75/66286245415.pdfIn PDF document text
    • https://aa84fbb7-d3ea-4675-94d1-3a2d808898f4.filesusr.com/ugd/661a84_c5f95cea35d14e75a500779a47d96134.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/493aee09-fc21-4d5c-99e6-915d36b8aecc/georgia_tech_computer_science_laptop_requirements.pdfIn PDF document text
    • http://derarav.rf.gd/46018925759.pdfIn PDF document text
    • http://wikeratofi.epizy.com/did_vikings_fight_with_axes.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B8A 4796 bytes
SHA-256: 713ee18fe7228366e3c066384ff5e187734197ca9bdbd013e18453fba0ad9732
font_01_sfnt_off00011ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA8 10812 bytes
SHA-256: c57a2586db59711631dac085c42126eb3730f1619dde0b6bd785015fa2571df1
font_02_sfnt_off0001410e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1410E 16176 bytes
SHA-256: b34bc647a855ee836f1f15d23d07ef8fc86c66da9663e0d441a972b7f835d709
font_03_sfnt_off00015624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15624 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e