Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed019770faeffa3…

MALICIOUS

PDF

99.6 KB Created: 2021-04-16 19:34:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 720c578c4fa25a5a7f7d17bc36eface2 SHA-1: d7b49dac3a7a177f2b27a37f832e8c5bc5ba8277 SHA-256: 9ed019770faeffa3c0b945311a81e892dafa181cb46a76bb46a547650f1d9edf
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 0.9992

Heuristics 5

  • 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 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://fokemale.ru/strik?utm_term=pretty+little+liars+season+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417815/normal_5fd21979a7dd9.pdfIn PDF document text
    • http://grizhoff.ru/safizp6btu.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/LigAjcs/google_sheets_script_onedit_cell.pdfIn PDF document text
    • https://cdn.sqhk.co/bidusowo/eMihojg/fancode_cricket_scores_watch_bundesliga_live_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzitomizaj/jgjajbB/mailbox_emoji_copy_and_paste.pdfIn PDF document text
    • http://peuer.xyz/fufejagegiliwaravexowq7p7.pdfIn PDF document text
    • http://prizinsta365.online/nirugonabewodiwetisozzs8o.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446390/normal_5fe2d25a901a9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501193/normal_5fde115874dfb.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/f2598604-d952-4fe1-85bf-ff8aeca5bf01/egyptian_cinderella_book.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/nijafajivavuladevebesumu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c2da4de-7e12-4c05-8a7b-ac64bce119c1/computer_basic_course.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3757355c-5578-45a5-82d4-233031258765/89467182005.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31e1ab43-416f-4169-8466-3dffd60a5727/nj_drivers_license_change_of_address.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/fomalolodugizajutap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0df28a4-cfa3-44d1-ac22-3508a5e02663/25752446275.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/31330672062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7bbcd20-8c45-4271-ab90-0df1c1b6edfb/how_to_scan_multiple_pages_to_one_brother.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a5cfb3-2628-47da-a50d-84c58d897de3/48834684569.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b738ad7b-fcb6-4564-80e4-37b80857d33c/amt_amc_2020_results.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22115e4f-3ec7-495d-970b-94208d91f020/heroes_of_olympus_books_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/gogonof/ebook_free.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/63454692803.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_off00014a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A1E 4836 bytes
SHA-256: 28fed859f3b1c6b43a1dd45fdb5add9b647e3d1e004d55a1cf5e7cf2737655da
font_01_sfnt_off00015aa3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AA3 11220 bytes
SHA-256: aeda734cfb3b8d7c2980d94df1efb3de60e6bf5bfcc04425d76bc966c686fc97

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