Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0c77bb65a26dd12…

MALICIOUS

PDF

84.3 KB Created: 2021-06-06 16:53:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: fa86aa20929673eda662e213c408c2ce SHA-1: 3e56cff1e18638732b76b2ba2be511f04a934bec SHA-256: f0c77bb65a26dd12da5a4bea4b472bcf88ca056dd0745889377cccf1c9844099
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, with a primary lure pointing to 'garglob.ru' for Turkish series. Heuristics indicate it's a link farm on disposable hosting, and a ML classifier strongly flagged it as malicious. ClamAV also detected it as a phishing trojan. The document body, though partially corrupted, suggests a theme of free series and novels, aligning with common phishing lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://garglob.ru/pbw?utm_term=todas+las+series+y+novelas+turcas+gratis PDF link annotation
    • https://megogolu.weebly.com/uploads/1/3/4/3/134314378/6424632.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402520/normal_5fcd0ec98ed1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_600872cd364da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459036/normal_604d363558112.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500882/normal_605af226da135.pdfIn PDF document text
    • https://gibunuvupu.weebly.com/uploads/1/3/4/7/134746488/09c5f8c8fcb74f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4504870/normal_5fedd745a085c.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
    • http://ropotupi.pbworks.com/w/file/fetch/144528048/coreldraw_x8_free_download.pdfIn PDF document text
    • http://joxakuruvi.pbworks.com/f/33704847510.pdfIn PDF document text
    • http://mapijakemifo.pbworks.com/w/file/fetch/144458505/how_to_hack_in_counter_blox_2020.pdfIn PDF document text
    • http://morabef.pbworks.com/f/como_calcular_tabela_nutricional_dos_alimentos.pdfIn PDF document text
    • http://dobifapig.pbworks.com/f/74141721005.pdfIn PDF document text
    • http://foziwedugumu.pbworks.com/w/file/fetch/144432492/fahrenheit_451_quotes_with_page_numbers.pdfIn PDF document text
    • http://kipizasuzeda.pbworks.com/w/file/fetch/144648033/lorejokisudipubiti.pdfIn PDF document text
    • http://ziduzobif.pbworks.com/w/file/fetch/144455082/trivia_crack_2_cheats.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD666 6440 bytes
SHA-256: 3d4760ca295192c89086870ebbac49c5a5945404ea6ab57fca452cf2db5f569a
font_01_sfnt_off0000e65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE65A 5100 bytes
SHA-256: b4064813f6bd2594a188a9a281def1508971b6866424b9383c6a778dc8c1d611
font_02_sfnt_off0000f7cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CF 12772 bytes
SHA-256: ad0e3e22eeb6bebb388b2e3dec6a1fbbb315fc33dcc394e8af676d4eda5a6f81
font_03_sfnt_off00011f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F16 16036 bytes
SHA-256: 52db30b66cfb76898988bc7c6ed152514c301740808ab95bec9c68e49df23550
font_04_sfnt_off0001337e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1337E 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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