Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb8a623d2439091d…

MALICIOUS

PDF

46.5 KB Created: 2020-03-07 19:49:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: b639b52f1dd6accad7d31434005f8f1a SHA-1: c7d8180c316f1c684a2f8c64e6deeddeeb21492e SHA-256: cb8a623d2439091d2abe100896f187c4c218a76cb38c32390b2b0ddb47c5a1fc
104 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to other PDF files hosted on similar domains. This suggests a link farm or SEO poisoning tactic designed to drive traffic to potentially malicious content. The presence of a 'download button' heuristic further supports the idea that the document is intended to trick users into navigating to these external resources. 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://insureapplewatch.com/uploads/1/3/0/5/130551907/130551907.html#ayyappa+songs+old+telugu+lo PDF link annotation
    • http://redalertemergencycards.com/uploads/1/3/0/5/130545199/pofabadazod.pdfIn PDF document text
    • http://pilgrimvoyage.com/uploads/1/3/0/5/130539155/pusitikisop-girixosexer-wilovifivebe-subosumate.pdfIn PDF document text
    • http://mrspiacentini.com/uploads/1/3/0/7/130776519/2cc6a04.pdfIn PDF document text
    • http://newadpix.com/uploads/1/3/0/7/130739695/b13e68958b.pdfIn PDF document text
    • http://pcchristianradioevents.com/uploads/1/3/0/5/130589047/2193826.pdfIn PDF document text
    • http://www.greendreamteamokanagan.com/uploads/1/3/0/7/130739779/wadomepofinije.pdfIn PDF document text
    • http://espirituoso.com/uploads/1/3/0/4/130435787/jamaruxepo.pdfIn PDF document text
    • http://my-versatile.com/uploads/1/3/0/6/130620755/pelerovef.pdfIn PDF document text
    • http://mairu-tabi-bonbigirl.com/uploads/1/3/0/5/130589159/kanesarefufoz.pdfIn PDF document text
    • http://polarclad.com.au/uploads/1/3/0/5/130543979/mebojolelukerup.pdfIn PDF document text
    • http://mostlymeh.com/uploads/1/3/0/5/130551567/7107235.pdfIn PDF document text
    • http://blogalytix.com/uploads/1/3/0/7/130739180/f8f738fc.pdfIn PDF document text
    • http://kichesepies.com/uploads/1/3/0/7/130739852/3a7581f41.pdfIn PDF document text
    • http://www.digitalmultimeter.ch/uploads/1/3/0/2/130272319/tunefikevuja-wojado-rediv-xivepegerifaxuk.pdfIn PDF document text
    • http://path-to-wellness-llc.com/uploads/1/3/0/7/130738591/18a6402bf122.pdfIn PDF document text
    • http://ejunkie.us/uploads/1/3/0/8/130874019/zonafatojimabox.pdfIn PDF document text
    • http://rotoruayachting.club/uploads/1/3/0/5/130588803/bominidadef-xozililisa-manadutejuwil-gezelimugexazuf.pdfIn PDF document text
    • http://linnellfamilyfarm.com/uploads/1/3/0/3/130379482/034ed.pdfIn PDF document text
    • http://www.kurtandterry.com/uploads/1/3/0/7/130738984/deziximebidikek.pdfIn PDF document text
    • http://newresume2019.com/uploads/1/3/0/4/130483184/pizano-sururibub-xubimij-likimedujij.pdfIn PDF document text
    • http://connectivityusa.net/uploads/1/3/0/2/130273571/mofasonusowetumuk.pdfIn PDF document text
    • http://www.jedparkerdigitalartifact.com/uploads/1/3/0/7/130738578/8830028.pdfIn PDF document text
    • http://webmail.prettynpoised.com/uploads/1/3/0/6/130620370/novapuguvokena.pdfIn PDF document text
    • http://silverbulletgunworks.com/uploads/1/3/0/8/130814513/pavabod-zefunew-lekuzakewim.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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_off0000768d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x768D 9364 bytes
SHA-256: d448729db8a39462ed77a8a3d9946bf0382e3d41a127fdadb72d1e3c0d379cce
font_01_sfnt_off000096f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F6 16096 bytes
SHA-256: bb65e153df78154bfd14470754e87ba03df7715f8d52849d071c5334056f3476

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