Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a572861a65cba74…

MALICIOUS

PDF

75.3 KB Created: 2021-03-23 13:03:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc67198c1cd3c4bfecd5715200e97ddc SHA-1: 7fffefedfe9072eb00181fe8081d410dac8206f5 SHA-256: 5a572861a65cba741670d11d1b90a3fecf303263350f00940884b88fb3c2a72d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains numerous links to external websites, many of which are flagged as malicious redirectors or part of a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically a phishing or trojan distribution campaign. The embedded URLs are the primary indicators of compromise, likely leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=haier+mini+fridge+repair+manual
    • https://ropifupagefe.weebly.com/uploads/1/3/4/5/134584424/sefir-xanukumena.pdf
    • https://pogizufibedisiw.weebly.com/uploads/1/3/1/6/131606284/3161216.pdf
    • https://bojufare.weebly.com/uploads/1/3/1/0/131070992/relepane.pdf
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/8063901.pdf
    • http://guwilos.iblogger.org/bollywood_movie_video_song_site.pdf
    • https://kevanosum.weebly.com/uploads/1/3/0/9/130968994/masorezi_jironez.pdf
    • https://linepofikoleku.weebly.com/uploads/1/3/4/4/134492010/finodami.pdf
    • http://jelelegukawox.22web.org/91071696760.pdf
    • https://nutagabe.weebly.com/uploads/1/3/5/3/135325028/ef8f2a.pdf
    • https://webakutukulufu.weebly.com/uploads/1/3/2/6/132683024/5145463.pdf
    • http://zezasasipow.iblogger.org/solubility_curve_worksheet_2.pdf
    • https://buvaranugabenu.weebly.com/uploads/1/3/0/8/130873820/1393647.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vubepet.epizy.com/secret_life_of_bees_movie_short_summary.pdf
    • http://kiviritibudemo.epizy.com/god_alone_gyanamata.pdf
    • https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_94b35eb1c5074be78932329909a70ecd.pdf?index=true
    • http://pifaramurul.rf.gd/braille_code_cheat_sheet.pdf
    • https://66f9c2bc-82a6-463d-9ccd-9c94d3d8805e.filesusr.com/ugd/b361c6_db40358752e440c0b183082426d98e91.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea27.bin
f45ccb4c1ec46d4885436f411a98377aec277b2ff5ce58e13ddfa6d87daf38cb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA27 5144 bytes
font_01_sfnt_off0000fb94.bin
a62715bf3fc68535690f87ba40f5d78990936b72467822749a6ca62c00970efc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFB94 10712 bytes

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