Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6b57e358bbf6c5d…

MALICIOUS

PDF

111.4 KB Created: 2021-01-08 18:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7c2d808e6a9d0bd0204b5b5eee64dd3c SHA-1: e87c540d3c87c97b8f1176cae594736d0057ef11 SHA-256: a6b57e358bbf6c5d93fd2336e707386ff971517084a81f87267de05e3f619ff4
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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/123?utm_term=cop+gymnastics+center In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365555/normal_5f86ffdec8f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387411/normal_5f944e6106a38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492281/normal_5fd326353610c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454825/normal_5fd68b45de9d8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459322/normal_5fc6dfc825f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366668/normal_5fa1be0d96a71.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/rujabepifar/ms_biomedical_informatics_stanford.pdfIn PDF document text
    • https://s3.amazonaws.com/bejokazemur/73544245222.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ac7310a-3282-4444-b52a-d2b5768621c7/luwisatazu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6d98af7-a6ac-40a5-b9d1-b1a7677b8170/dowukagugoril.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0bd6bbcf-6704-45e0-bcec-f0e4bb1c827a/android_app_review_process.pdfIn PDF document text
    • https://s3.amazonaws.com/wovugi/internet_connectivity_broadcast_receiver_android.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000156f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x156F7 3024 bytes
SHA-256: 035373de8815e1d4c41b56bd88470f77a3e62a5a62df431d8430b0c08f3c2b08
font_01_sfnt_off000161bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161BD 5228 bytes
SHA-256: afa491c46fe991c48892021071bb1a1e1f51179d91aa0f3ac8db034f999ff101
font_02_sfnt_off0001737b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1737B 12908 bytes
SHA-256: e93d1c3ca2413b53fb87d39db8423e415cde6ddc5f82ff918c4efbfa6b146788
font_03_sfnt_off00019b37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19B37 16060 bytes
SHA-256: 8f676b3be356e2086f34f7c81dd3575184be90372cbe0b4aaba7ba30be3377d2

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