Malicious PDF — malware analysis report

Static analysis result for SHA-256 749e8634370cfece…

MALICIOUS

PDF

34.5 KB Created: 2020-03-30 08:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: d3b04fd3747cc8d0e959656702d34b29 SHA-1: 1a0fab3be8b09675a804997072b6cfd89e8d126e SHA-256: 749e8634370cfece1ac76463717111edb9c2467d890964ff0e862f7ad08928a4
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are structured as SEO-optimized PDF gateways, suggesting a link farm or redirection scheme. The document body, though partially corrupted, contains text related to 'battery replacement instructions' and includes URLs that likely lead to malicious content or phishing pages. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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://rehphotography.org/uploads/1/3/0/4/130488312/130488312.html#back+ups+xs+1500+battery+replacement+instructions
    • http://propheticvoicerelease.net/uploads/1/3/0/9/130969372/kokagun_dulofajuxavon_xuxovata_vumowatizolid.pdf
    • http://noahdetiege.com/uploads/1/3/0/5/130589085/sexekaketa.pdf
    • http://papillonsolutions.com/uploads/1/3/0/7/130739628/nevijip-xowopiwa-puluj-topadupekomix.pdf
    • http://comptonedtech.org/uploads/1/3/0/5/130539021/pewewipojavetojazek.pdf
    • http://tayshairdepot.com/uploads/1/3/0/5/130542728/redebupiw.pdf
    • http://peckerheadproducts.com/uploads/1/3/0/6/130622022/puzufefe.pdf
    • http://comfish.com.au/uploads/1/3/0/6/130605351/f823a01960.pdf
    • http://babylossfamilyadvisors.com/uploads/1/3/0/4/130483351/379ddbf07a.pdf
    • http://coffeesalad.com/uploads/1/3/1/3/131398006/kifuneminidome.pdf
    • http://yukonfishing.ca/uploads/1/3/0/5/130551176/998852.pdf
    • http://islandtherapeuticmassage.org/uploads/1/3/0/8/130813650/lutikesudififu_datidi.pdf
    • http://barksbows.com/uploads/1/3/0/4/130488398/9856984.pdf
    • http://solarenergybrokerinc.com/uploads/1/3/1/1/131163859/039ce7eb84.pdf
    • http://halcyon-grace.com/uploads/1/3/1/0/131070313/7606678.pdf
    • http://helpingmothersheal.org/uploads/1/3/0/4/130483801/tijarukisudada.pdf
    • http://triciapagetherapy.com/uploads/1/3/0/4/130477090/680919.pdf
    • http://daniel-henriks.com/uploads/1/3/0/4/130435780/5678a162.pdf
    • http://gingerbreadhouseclc.com/uploads/1/3/0/7/130776273/b730fdde2d31e.pdf
    • http://fitatheart.net/uploads/1/3/0/5/130544781/xogipiza.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e63.bin
c0765b4fdc4b1934e8e2a0565f9b3460c3a22e4b5f8397f13e65f8a3231054ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E63 7672 bytes

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