Malicious PDF — malware analysis report

Static analysis result for SHA-256 eec2857a148017d7…

MALICIOUS

PDF

35.4 KB Created: 2020-06-14 08:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-24
MD5: 72dddf0a62cf281ed87f3b2f6f0276b0 SHA-1: f2fb5f2ebd568a9cf36de818da90bfd8e4028efb SHA-256: eec2857a148017d71076bd76e7d8cce52675dcbdcc905b5d13133fee5a1f5b9f
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous external links, a common tactic for SEO spam and malware distribution. The document body text, though partially garbled, indicates a lure related to an "Android download manager activation". The primary heuristic firing points to an external URI that aligns with this lure, suggesting the document's purpose is to trick users into downloading malicious Android applications. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://greenfireaz.com/uploads/1/3/1/4/131454766/131454766.html#android+indirme+y%25C3%25B6neticisi+etkinle%25C5%259Ftirme PDF link annotation
    • http://hilismasonryllc.com/uploads/1/3/0/6/130639377/275848.pdfIn PDF document text
    • http://dns.mauidreamer.com/uploads/1/3/0/7/130740320/turakubev.pdfIn PDF document text
    • http://nleautorepair.com/uploads/1/3/0/4/130483959/9793676.pdfIn PDF document text
    • http://markmanningfilms.com/uploads/1/3/0/2/130288563/gesojuvomo.pdfIn PDF document text
    • http://jessicaajames.com/uploads/1/3/0/4/130490301/313088.pdfIn PDF document text
    • http://scoptra.com/uploads/1/3/0/5/130551856/7570439.pdfIn PDF document text
    • http://questsouthwest.co.uk/uploads/1/3/1/4/131483488/xakofumi.pdfIn PDF document text
    • http://natouskitchen.com/uploads/1/3/2/3/132302970/561734.pdfIn PDF document text
    • http://erwinprecisioninc.com/uploads/1/3/0/7/130738845/wamowukobo.pdfIn PDF document text
    • http://hotchiwitchi.com/uploads/1/3/1/8/131856108/bopako.pdfIn PDF document text
    • http://hostmaster.breadandrosespub.com/uploads/1/3/1/4/131438111/7dc72.pdfIn PDF document text
    • http://chutze.com/uploads/1/3/0/4/130476429/sovinegigoj.pdfIn PDF document text
    • http://webmail.thedaisyrose.com/uploads/1/3/1/8/131872042/10a06.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://pizosepuwa.files.wordpress.com/2020/06/88957705794.pdfIn PDF document text
    • https://bifatapir.files.wordpress.com/2020/06/vugob.pdfIn PDF document text
    • https://guvewex.files.wordpress.com/2020/06/gamabixapisenoma.pdfIn PDF document text
    • https://luperixul.files.wordpress.com/2020/06/kobividewinira.pdfIn PDF document text
    • https://tobedubokigu.files.wordpress.com/2020/06/16771055645.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005bb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB0 11264 bytes
SHA-256: 6599836f59bf7af750fc79f7f605c46221fa68e5f1885bda48ceaa64a17ea400

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