Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ece760bd7790c55…

MALICIOUS

PDF

73.1 KB Created: 2021-03-18 17:08:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 5e1fc7f230f4fcb8f13c3e212d2cdd12 SHA-1: e9fc2304c2a9cd5cfc067274330838185dce0788 SHA-256: 5ece760bd7790c55031fff1057529e7c311fb1892a0f13022145383a146f5b33
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous embedded URLs, with a high concentration of them pointing to disposable hosting services and link farms. The document body, though heavily obfuscated, contains text related to song lyrics, suggesting a lure to disguise malicious links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution via the linked sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/123?utm_term=lirik+lagu+chrisye+kala+cinta+menggoda PDF link annotation
    • https://tuvopezape.weebly.com/uploads/1/3/4/7/134712323/fiwuzuduw_nowagadufig.pdfIn PDF document text
    • https://tajadituzutop.weebly.com/uploads/1/3/1/4/131409135/wezovafisu_mujovavonopig_wanor.pdfIn PDF document text
    • https://xorurilij.weebly.com/uploads/1/3/5/3/135325910/f748681f6.pdfIn PDF document text
    • http://medebux.22web.org/bazevowazepino.pdfIn PDF document text
    • http://paxosij.mygamesonline.org/75092854184.pdfIn PDF document text
    • http://zolepop.mypressonline.com/antioxidant_activity_of_plant_extracts.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lefutakogojabi.rf.gd/theft_ipc.pdfIn PDF document text
    • http://silapopo.epizy.com/advantages_of_dbms_over_file_processing_system.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/is_yoga_good_for_back_and_neck_pain.pdfIn PDF document text
    • http://nexadif.epizy.com/niwumezezukudana.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/gimelugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/087e6d32-b7a2-438e-95b2-282c736a34a0/nabetowajadimagit.pdfIn PDF document text
    • http://gabozimipuz.epizy.com/o_que_e_uniforme_em_ingls.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51597b7a-138f-4732-b502-c216ea930c61/xopunovozulunojenawil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ca3f474-5e44-4283-a3ee-c237ac007a66/360_degree_leader_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/beautiful_love_couple_wallpaper.pdfIn PDF document text
    • http://wulixojapekapa.epizy.com/zeximepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/279e2d6c-f046-408d-8096-da9d5a698188/56784675341.pdfIn PDF document text
    • http://mivapizin.epizy.com/gujasa.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 5460 bytes
SHA-256: b23fc27dad16f97cdae64070df54a28548322aa5e17065c91e9c82345e65a1e8
font_01_sfnt_off0000f0cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0CD 10828 bytes
SHA-256: 54901cec1598ddf3ed1934a605a431f83d9333539237e93b97a98d5a6892b6b7

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