Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7f604fcd33c440…

MALICIOUS

PDF

93.2 KB Created: 2021-03-23 10:20:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35ec53207e774ed7992dea135829f724 SHA-1: d29bc3952a5fcc8ac204e3c1a1d65d6da482bb89 SHA-256: 9b7f604fcd33c44075ab1fb0f3f314595585d27e3f82a4816ab73ff5410423f0
196 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to suspicious domains, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and numerous embedded URLs are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://jumiwimov.ru/award?keyword=arbitration+act+1940+in+urdu+pdf
    • http://vivekawiga.sportsontheweb.net/the_trobrianders_of_papua_new_guinea_ebook.pdf
    • https://tazuwadafif.weebly.com/uploads/1/3/4/8/134857375/pajiguwagut-jiluj-tatutufos-zorot.pdf
    • https://lukozosa.weebly.com/uploads/1/3/4/4/134485969/pojijiki.pdf
    • http://loginwithfb.site/yamaha_rx_v673_resetqd5q1.pdf
    • https://zikixitifo.weebly.com/uploads/1/3/4/8/134897390/gosijologawevo.pdf
    • https://zukutalemuz.weebly.com/uploads/1/3/4/5/134582669/tifalif.pdf
    • https://mifopezuzata.weebly.com/uploads/1/3/4/4/134484464/dolinulaletaxirezazo.pdf
    • http://reform-st.ru/hatchimals_colleggtibles_season_2_checklistc6q6d.pdf
    • https://wudowured.weebly.com/uploads/1/3/0/8/130873715/tafumeridememel.pdf
    • http://kupivse.xyz/which_fruits_grow_in_florida8ik0r.pdf
    • http://kelimap.mywebcommunity.org/glossary_of_economics_terms.pdf
    • http://farvestnn.ru/603798205934o4y9.pdf
    • https://duwizule.weebly.com/uploads/1/3/4/6/134663296/zenixakoduda-bagobobesubuwu.pdf
    • https://gijegemolu.weebly.com/uploads/1/3/1/3/131380899/8823453.pdf
    • https://nunavataregexo.weebly.com/uploads/1/3/0/7/130775742/patasifigi.pdf
    • https://tezubowaxax.weebly.com/uploads/1/3/4/6/134640868/3775311.pdf
    • http://ellmax-site.xyz/how_to_count_rests_in_music8yf2w.pdf
    • https://juvidefe.weebly.com/uploads/1/3/4/3/134319267/botoverululunosopi.pdf
    • https://vigodabazo.weebly.com/uploads/1/3/4/8/134872933/6c409b355f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://8dac4d01-2cd1-45d2-8b5f-6005f802adc9.filesusr.com/ugd/1f96ce_40993087af3f4020ba0a5fe938c2aecd.pdf?index=true
    • https://855e1e5b-0daf-4dce-aa73-dfad2bfec5df.filesusr.com/ugd/ced2dc_8e36bbca9c7746c694abe45dcfaaadff.pdf?index=true
    • https://ac685e6e-6442-44c0-91a1-b3a367e79ef2.filesusr.com/ugd/ce77c6_53d46bb83995439ea8e9d893bc722ecc.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_off0001302e.bin
d01d6f080b4ba576ac748f2d49cd69ef3a6b8f9e29efecf5758785631a870bfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1302E 5504 bytes
font_01_sfnt_off000142fa.bin
adce342471af2bbcf272efed42e337d0736d88ba0dd213137b509b8484b489a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x142FA 10732 bytes

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