Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3bebdf852dc113f…

MALICIOUS

PDF

85.2 KB Created: 2021-03-11 23:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 222b50292e3da736ebd0f92844675638 SHA-1: 901d8e5f277c689c9643f3eb72af21a6152c744c SHA-256: e3bebdf852dc113ff2067f0c18cb2c75bcf33639f8e4e28e2466b6f37b88831d
184 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to software downloads, reinforcing the phishing or malware distribution lure. The presence of numerous links on disposable hosting further supports a malicious intent to distribute payloads or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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://dafemum.ru/award?keyword=go+with+microsoft+office+2020+volume+1+pdf+download In PDF document text
    • http://kugimanuvo.iblogger.org/latest_bollywood_movies_hd_mkv.pdfIn PDF document text
    • https://cdn.sqhk.co/porifepi/jjicHhd/forming_access_and_support_inc_contact_number.pdfIn PDF document text
    • https://revawovaweku.weebly.com/uploads/1/3/4/0/134013066/5094477.pdfIn PDF document text
    • https://cdn.sqhk.co/gobenebovi/ie6LDcv/ruxeparoli.pdfIn PDF document text
    • https://nozodipipagim.weebly.com/uploads/1/3/1/4/131438171/2279228.pdfIn PDF document text
    • http://onlineeshop24.xyz/7740286826bhdya.pdfIn PDF document text
    • http://buybritishcat.com/59349714626a66er.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/bjchj2k/ps4_remote_play_for_mac_10._11.pdfIn PDF document text
    • http://theporte.xyz/12938320905kk8m7.pdfIn PDF document text
    • https://cdn.sqhk.co/fetedudi/cjimic4/5351734320.pdfIn PDF document text
    • https://noperutepa.weebly.com/uploads/1/3/4/7/134721309/343af98cfad.pdfIn PDF document text
    • http://rotixumuzu.22web.org/chacha_video_calling_app.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/hdign68/nibolu.pdfIn PDF document text
    • https://dudunubute.weebly.com/uploads/1/3/4/1/134132035/tituvazazasal.pdfIn PDF document text
    • http://tejidetegowewi.iblogger.org/samutowififamoxama.pdfIn PDF document text
    • http://mebel-albero.ru/wifogetasuxra87q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lefemijip/lepoledoguxif.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/dovatekidigebezozo.pdfIn PDF document text
    • https://s3.amazonaws.com/kuxuxemu/69759330994.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/apollo_11_moon_landing_newspaper_report.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/wawopegijuro.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/plague_inc_neurax_worm_guide.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_off00010da3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DA3 5904 bytes
SHA-256: debfa79e57af243065a49823c2f437a9505fcaa8d883f83d052abce96d741fa3
font_01_sfnt_off000121b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121B5 11196 bytes
SHA-256: a68275572ff14cf4d2bb2fe3b0e3238dc38c7e514d38994451a2837881e9b05a

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