Malicious PDF — malware analysis report

Static analysis result for SHA-256 d35d62175d2c08ea…

MALICIOUS

PDF

91.9 KB Created: 2020-04-08 14:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-08-25
MD5: 38bb6bf9d7104210769f7b34d62ce19b SHA-1: 32bc1164e7d3e6e409050dfbb02035323dfc853b SHA-256: d35d62175d2c08ea17e00f3847ca94b1f5f2516ef57846dc590add14b53835cd
104 Risk Score

Malware Insights

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

The PDF document contains a significant number of external links, forming a link farm. The document body text, though partially corrupted, suggests a lure related to 'Zawgyi font for windows 8.1 pro', combined with a 'Download Now' call-to-action. This indicates an attempt to trick the user into clicking on one of the numerous embedded URLs, likely leading to further malicious content or downloads.

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://sizemattersstorage.com/uploads/1/3/0/8/130814714/130814714.html#zawgyi+font+for+windows+8.1+pro PDF link annotation
    • http://juliawencello.com/uploads/1/3/0/2/130289692/duluvagezomolegox.pdfIn PDF document text
    • http://mjconsultantsllc.net/uploads/1/3/0/6/130639768/de9ddd725.pdfIn PDF document text
    • http://steinmanlab.com/uploads/1/3/0/6/130622023/9443691f4.pdfIn PDF document text
    • http://wpanc.org/uploads/1/3/0/4/130493968/xolena.pdfIn PDF document text
    • http://nervousystem.net/uploads/1/3/0/7/130776143/bezuwezobeku-redapawivujosom-noduvoxux-xudesujo.pdfIn PDF document text
    • http://moderntechnique.org/uploads/1/3/0/7/130776607/noxedapan.pdfIn PDF document text
    • http://vidaabundanteonline.com/uploads/1/3/0/6/130621776/088473e.pdfIn PDF document text
    • http://marison.com/uploads/1/3/0/7/130775707/399314.pdfIn PDF document text
    • http://prince-mak.com/uploads/1/3/0/8/130813630/8877664.pdfIn PDF document text
    • http://abbottconstruction360.com/uploads/1/3/1/3/131380582/zozasugufuximadu.pdfIn PDF document text
    • http://paulafreeman.org/uploads/1/3/0/2/130270837/4222661.pdfIn PDF document text
    • http://tycoonbeardcompany.com/uploads/1/3/0/5/130539518/xobamufapowi.pdfIn PDF document text
    • http://scripts.sil.orgCopyrightIn 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
    • http://scripts.sil.org/oflPadaukIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4D 33432 bytes
SHA-256: 58157fee8cb19cac7ea4c003f6c9e8d8212b6a98634dc44fafa1e35e1cf4c327
font_01_sfnt_off00012bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BC4 8024 bytes
SHA-256: 49e75fd655a1f4179909dd6b0476b4cfbb4f40719896d1ef9a26ecd7b8f46f58
font_02_sfnt_off00014ac2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14AC2 16084 bytes
SHA-256: d65752e558a9090157c9a1b02647c04d2680198cf9d52ff42939ef8ccbf7fabd

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