Malicious PDF — malware analysis report

Static analysis result for SHA-256 fda988abb98bf629…

MALICIOUS

PDF

68.6 KB Created: 2020-11-20 15:15:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 653f71480738bfa2525ef9da2552e6f2 SHA-1: 94ffa8ca602cc405e655d9346c175fee9da3b4b3 SHA-256: fda988abb98bf629f2ffb91fb8884d657940ccaff06454a09832d9c9bbf4418a
154 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains keywords related to a "live stream" lure, suggesting a phishing or redirection attempt to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/123?utm_term=samsung+360+live+stream
    • https://rosojuvawava.weebly.com/uploads/1/3/4/7/134719385/4d2bf8.pdf
    • https://cdn-cms.f-static.net/uploads/4367640/normal_5f9036b00247c.pdf
    • https://cdn-cms.f-static.net/uploads/4405186/normal_5fa0e0a4d0e89.pdf
    • https://mibakadediwo.weebly.com/uploads/1/3/4/5/134584598/pizabilamefo.pdf
    • https://lilawowawumoxo.weebly.com/uploads/1/3/1/4/131453384/xotobejuwogo.pdf
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8a14db783f2.pdf
    • https://dipakinujudisil.weebly.com/uploads/1/3/4/4/134468351/a5dcb27e.pdf
    • https://cdn-cms.f-static.net/uploads/4483354/normal_5fae8cbde8c1c.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/bd855b01-9728-497a-bd48-b0d9434798ff/fotosesixogojub.pdf
    • https://uploads.strikinglycdn.com/files/44231f03-007f-476d-a53b-d76c75c8849a/fisusetezoxo.pdf
    • https://uploads.strikinglycdn.com/files/c27ef5c6-610e-41da-badb-1344a1d26c91/dukadijanulupazidunig.pdf
    • https://uploads.strikinglycdn.com/files/c14dfe45-a94e-45f4-8c60-8717d6555a5b/7585926041.pdf
    • https://uploads.strikinglycdn.com/files/f26c2940-42dc-4d63-8c27-a6eb30847cb4/nogibanikebu.pdf
    • https://uploads.strikinglycdn.com/files/19351ff5-fcec-4108-b1b3-daeb8cb104d3/edwards_and_magee_technical_analysis.pdf
    • https://s3.amazonaws.com/tuxutedi/cardinality_in_dbms.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf68.bin
d9f6782620839eb680fd161e4ce8bb89ca9382fb805020da0ee35ec0d571b063
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF68 5628 bytes
font_01_sfnt_off0000e27e.bin
a0e3aaab8a7c660154587b1383cea3670b41aa6cec625e6747048fe152b2dfbf
pdf-font-stream PDF embedded font (sfnt) at offset 0xE27E 10220 bytes