Malicious PDF — malware analysis report

Static analysis result for SHA-256 a72e62fcbad51407…

MALICIOUS

PDF

75.8 KB Created: 2020-12-09 11:48:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 21b86706fc3acbaf6eb26d4b6e92a876 SHA-1: 1634149bf982dbcd6844c2cddf709835b3027faf SHA-256: a72e62fcbad51407f90c806d4aea714e2d0c66b23e409900ab839348d82db0ae
222 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external resources, with one critical heuristic identifying a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains references to 'Batman arkham city apk free', suggesting a lure for pirated software. The presence of multiple PDF links and a 'download button' heuristic further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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 https://gettraff.ru/aws?utm_term=batman+arkham+city+apk+free In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365998/normal_5f8e911c9ff8f.pdfIn PDF document text
    • https://foziletixe.weebly.com/uploads/1/3/4/8/134868526/62fc156.pdfIn PDF document text
    • https://novebeze.weebly.com/uploads/1/3/3/9/133997241/jexijafi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417830/normal_5faf7ae163caa.pdfIn PDF document text
    • https://wetewiduwolenit.weebly.com/uploads/1/3/4/5/134599830/9916365.pdfIn PDF document text
    • https://janirakuvofubej.weebly.com/uploads/1/3/4/7/134734148/b9fc75b0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc5216c7d0c8f249d5c593f/t/5fc78b790791337046e85c90/1606912891230/kubif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b5cb161f8068bec97957/t/5fcd0dd124c49707d32403fc/1607273938915/zombie_outbreak_arcade_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0280b50-43b4-4772-9b54-aafd2b92102b/56913583498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbce749f-5d46-4fb5-9c7b-795cd2d7138e/zusus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1c675d5-4fc3-45c5-88d1-e6c3a676c318/nogusapewurivav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02380c4f-4b0f-438e-93cf-f64ecd7c9dce/claves_de_gta_4_xbox_360.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F7 5260 bytes
SHA-256: 311b533c2a77aec8becc982e4cbd838b4d691eb9045870a56f75b0ba1b96175f
font_01_sfnt_off0000e5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 12352 bytes
SHA-256: 9df735cb0c576a8e2cd4e2098cc76122321b3b10bb497184855f8114571b3656
font_02_sfnt_off00010dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DC2 16060 bytes
SHA-256: 4c0a3f0893f5e69c6acf0c6b7f036872587aec6188c41bdd40a009ab43c82216

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