Malicious PDF — malware analysis report

Static analysis result for SHA-256 56d8d294c5761cb1…

MALICIOUS

PDF

72.1 KB Created: 2021-01-15 16:04:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 2f1008720ddce958c4cf65b1f318764d SHA-1: a3e61d9d524b5c61e737b3c1fbc44285c8fc9704 SHA-256: 56d8d294c5761cb1b84de82fc90b19609aafe2da3e565e6cd62ddf70c0c5b121
214 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to an 'appreciation email sample'. The presence of multiple PDF links and a critical ClamAV detection strongly indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://traffking.ru/aws?utm_term=formal+appreciation+email+sample In PDF document text
    • https://site-1176067.mozfiles.com/files/1176067/genofuwode.pdfIn PDF document text
    • https://rirumuzog.weebly.com/uploads/1/3/4/1/134109041/8159145.pdfIn PDF document text
    • https://site-1167986.mozfiles.com/files/1167986/84043678725.pdfIn PDF document text
    • https://site-1175555.mozfiles.com/files/1175555/91988030191.pdfIn PDF document text
    • https://lenimupet.weebly.com/uploads/1/3/4/0/134013040/895576.pdfIn PDF document text
    • https://jepejopik.weebly.com/uploads/1/3/4/6/134610321/8182799.pdfIn PDF document text
    • https://site-1166657.mozfiles.com/files/1166657/bootstrap_basic_blog_template.pdfIn PDF document text
    • https://site-1196795.mozfiles.com/files/1196795/dress_up_games_for_barbie_princess.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/xisefowu/memarumiduwupegowexi.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/bash_shell_scripting_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/kozibowisenatu/somefesemaxebalabivemef.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/spotify_latest_apk_mod.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA5 5032 bytes
SHA-256: f38823e491d416e34f7a4bf2f627219cfc64c4495143481a70603244f44af3a4
font_01_sfnt_off0000efa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA7 10596 bytes
SHA-256: 7f5190412a2aba646e2530107373fdc01ffeae9fc8f5042e4b63aa59043221f5

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