Malicious PDF — malware analysis report

Static analysis result for SHA-256 019037eafdcc555d…

MALICIOUS

PDF

68.2 KB Created: 2020-12-19 16:02:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f95c72e90d23a9ef8974f3bb8c50fc09 SHA-1: d6b4025eabf5ef8296e42ac609885b6e578999e8 SHA-256: 019037eafdcc555d0d7a982f536ebec2bedbca6b2d3d68333b34ac7664c9f48c
214 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to a link farm designed to redirect users to malicious sites, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing lure, potentially leveraging embedded JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffmen.ru/aws?utm_term=livros+sobre+ecologia+e+meio+ambiente+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402721/normal_5fc30f689c740.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/xawemefezepime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413707/normal_5f982e592d7f5.pdfIn PDF document text
    • https://zijavenokin.weebly.com/uploads/1/3/4/3/134315340/mofakelekuk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb7fdfef-ab9c-455d-ade9-92fbb7375fc6/sandy_the_squirrel_voice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d180077-5a0c-4944-860f-cae5e6b88511/power_wagon_for_sale_san_antonio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c7ea377-83d9-4434-9979-f9aa9139e405/tefazidilovoromarugijudo.pdfIn PDF document text
    • https://s3.amazonaws.com/ladiwuzetawedi/kbp307_bridge_rectifier_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b948091f-f3de-4b11-aa5a-4e2fb0e98b05/cooler_master_stryker_se_full-tower_case.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc7b6f43483e57e2cf12c2/t/5fdcaaf838e73f2e3d7a2ae3/1608297208369/android_studio_generate_signed_apk_command_line.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/annual_report_kino_indonesia_2015.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0dc971c8c741314319700/t/5fc313dcf8cdb769c648ab44/1606620128204/openvpn_manual_uninstall.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/jerelapevajozevesum.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_off0000ca0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA0E 5616 bytes
SHA-256: d0f383f7d771c0f2d637e0b3533badbc500306963a53e038999156740cc9905e
font_01_sfnt_off0000dd17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD17 12304 bytes
SHA-256: a3feb240578d2b84d108983fc1fc73bf98f424017d54dfb9cedab4894274abff

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