Malicious PDF — malware analysis report

Static analysis result for SHA-256 f32f98b8a54be384…

MALICIOUS

PDF

76.9 KB Created: 2021-03-21 07:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: babb1983080473ad5aaee1027045e949 SHA-1: 202a04b461c063b602a67a05e3d4cab35524a554 SHA-256: f32f98b8a54be384d0969a3b7a6d6e438eb773f83bccd260730e1bfc4ff96308
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a common tactic for SEO spam or phishing campaigns. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests malicious intent. The embedded URLs point to various domains, likely serving as lures for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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
  • 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://maypoin.ru/award?keyword=calendario+tv+mondiali+calcio+2020+pdf
    • https://taretowixulu.weebly.com/uploads/1/3/1/0/131070971/1a9085c.pdf
    • http://henrysavbr.site/solejowrx44.pdf
    • https://cdn.sqhk.co/sadinuko/9hhhcKi/vubupitifuvovirapodu.pdf
    • https://cdn.sqhk.co/gexopoku/c0Uihhg/fastrack_bikers_nb3022sl02_men_s_watch.pdf
    • http://chambrehq.xyz/how_to_medical_records7vjbo.pdf
    • https://nasuxixogidipan.weebly.com/uploads/1/3/4/7/134701521/5437320.pdf
    • https://fisoguxosat.weebly.com/uploads/1/3/2/7/132740182/e4e46b4f.pdf
    • https://cdn.sqhk.co/vugomupuzisa/hi2ihpA/gufuwebapudodosizirevek.pdf
    • https://static.s123-cdn-static.com/uploads/4411218/normal_5ff4e2f394cbd.pdf
    • http://yyyyyyhhhhh.space/sonic_medium_cherry_slush_calories5w4st.pdf
    • https://pezilesuwubev.weebly.com/uploads/1/3/4/6/134639222/4503967.pdf
    • https://cdn.sqhk.co/banuluwopote/scq6jax/goxoweliwibifubipisemu.pdf
    • https://cdn-cms.f-static.net/uploads/4394077/normal_6029b1dee0a40.pdf
    • https://cdn.sqhk.co/rawerusiwala/gijPghV/spike_city_mod_apk_android_1.pdf
    • http://shop-you.xyz/dagesimcpkkb.pdf
    • http://homearfes.com/varunuwibiremesejemupixs57a.pdf
    • http://dofolamemudowu.22web.org/acer_laptop_price_in_sri_lanka_softlogic.pdf
    • https://cdn.sqhk.co/nefikelifu/jjiiigo/garebibivaziwewelilipego.pdf
    • https://cdn-cms.f-static.net/uploads/4416327/normal_60321a0350d34.pdf
    • https://dewuvibemezifo.weebly.com/uploads/1/3/4/7/134763410/namesegozeti.pdf
    • https://cdn-cms.f-static.net/uploads/4387430/normal_600ddc801eefa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lofufizopugopo.rf.gd/chrome_advanced_settings.pdf
    • 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_off0000ee05.bin
6dabb4e0e5c987b5fb3126667cbd3a53347506068f1d543df44bab4249bb5bb1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5364 bytes
font_01_sfnt_off0001002f.bin
99af39fff17388891117e3c35e6b104afb2580e88792b177ccb5c576fb78cd5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1002F 10940 bytes

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