Malicious PDF — malware analysis report

Static analysis result for SHA-256 236ff7d35dc6c13d…

MALICIOUS

PDF

34.7 KB Created: 2020-03-14 11:40:34 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 33a1bf3ca3e433a2b1297a3599933efa SHA-1: aff6e5989c8b16f4f42a022dc37a6093271a3f22 SHA-256: 236ff7d35dc6c13d05a968481b1d732511807fd272f0c6e5e2c5a5e3ac95e56f
116 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. Additionally, a 'SE_CALLBACK_LURE' heuristic suggests the document may also attempt to trick users into calling a phone number. The embedded URLs are likely used for SEO manipulation or to redirect users to malicious websites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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 http://7levelselling.stefanaarnio.com/uploads/1/3/0/5/130589199/130589199.html#blackberry+mobile+original+ringtones+free PDF link annotation
    • http://nanaspizzapr.com/uploads/1/3/0/6/130639509/2496661.pdfIn PDF document text
    • http://mail.shopharperfinch.com/uploads/1/3/0/2/130272847/fibakij.pdfIn PDF document text
    • http://www.doutorrenatopalhares.com/uploads/1/3/0/9/130969166/8423408.pdfIn PDF document text
    • http://jewelrywithin.com/uploads/1/3/0/5/130551324/b26b8.pdfIn PDF document text
    • http://lemarchereview.com/uploads/1/3/0/7/130775952/dumapukezabuwikilelu.pdfIn PDF document text
    • http://drewdeshawn03.com/uploads/1/3/0/6/130639409/4473313.pdfIn PDF document text
    • http://mail.withmelshelp.com/uploads/1/3/0/5/130588342/fakusaxu.pdfIn PDF document text
    • http://www.wholeyou360.com/uploads/1/3/0/8/130874422/nopipidi-jowilegoruteku-lugob-zajepini.pdfIn PDF document text
    • http://hostmaster.easy-tan.co.uk/uploads/1/3/0/7/130740199/dejujo.pdfIn PDF document text
    • http://yogawithliberty.com/uploads/1/3/0/6/130621826/4de66acd384db.pdfIn PDF document text
    • http://natashabeautiful.com/uploads/1/3/0/5/130588822/07d33548f.pdfIn PDF document text
    • http://seattleyouthbasketballfoundation.com/uploads/1/3/0/5/130551262/nenebibizinijuboko.pdfIn PDF document text
    • http://mailinbackup1.chorvatcina.sk/uploads/1/3/0/6/130621111/jutike.pdfIn PDF document text
    • http://www.tanijuart.com/uploads/1/3/0/4/130477193/rabuwus_bewodopiko_seramogil.pdfIn PDF document text
    • http://amazingembroiderydesigns.net/uploads/1/3/0/4/130477131/86106.pdfIn PDF document text
    • http://eddie-ieong.com/uploads/1/3/0/6/130639959/mogudizi-gobefof.pdfIn PDF document text
    • http://beatzbylex.com/uploads/1/3/0/4/130483479/wejamidalid-lebozawo-wigukigimelin-tufutajezasaxu.pdfIn PDF document text
    • http://colo-ip49.mnemonix.com/uploads/1/3/1/0/131070971/989984.pdfIn PDF document text
    • http://mudanza-s.com/uploads/1/3/0/7/130740212/zezapak-zedivexubaz-pekuj-sorefojikolaba.pdfIn PDF document text
    • http://nannycounseling.org/uploads/1/3/0/2/130292104/4485777.pdfIn PDF document text
    • http://www.puttylove.com/uploads/1/3/0/6/130621225/wubem-nekilaraneluliv.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E1F 7916 bytes
SHA-256: 4e8fff12262f30dc4ad0083bcfc78d0ba4b769ec3bc6a0c4540c8bbe0d39fde0

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