Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ed15a3794f751e9…

MALICIOUS

PDF

84.1 KB Created: 2021-01-24 01:52:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fb7d6c6adb8b0e6057d65039541e0e88 SHA-1: 616096bcbeb18e534daec32772f8b0073cb2964b SHA-256: 7ed15a3794f751e9b61f9fb64388dc73505102daf94408a291351675d9c94fab
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm, indicating a phishing or SEO manipulation attempt. The ML classifier also strongly indicated maliciousness. While no scripts were extracted, the embedded URLs suggest an attempt to redirect the user to malicious or deceptive content, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://yafferge.ru/123?utm_term=test+2b+ap+statistics+answers In PDF document text
    • https://static.s123-cdn-static.com/uploads/4500208/normal_5fca43837a3f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413578/normal_5ff0e2765d866.pdfIn PDF document text
    • https://katabeguravaka.weebly.com/uploads/1/3/1/4/131407194/aa8f6.pdfIn PDF document text
    • https://cdn.sqhk.co/sovokeduseb/uhfifih/17624815958.pdfIn PDF document text
    • https://segoluremu.weebly.com/uploads/1/3/2/7/132740478/25a50441c691.pdfIn PDF document text
    • https://weginufakitin.weebly.com/uploads/1/3/4/8/134846544/7807210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420906/normal_600bef79bd5dc.pdfIn PDF document text
    • https://firudofomupavu.weebly.com/uploads/1/3/1/3/131384713/b95b4024be29a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380088/normal_5ff1d186df0e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388169/normal_5ff1d3a550a71.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503791/normal_5fd6416380c78.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485939/normal_5ffc4a440bad3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vavejijitatofu/zusunirewawipesarakogonor.pdfIn PDF document text
    • http://banobozibijur.epizy.com/guidelines_acute_heart_failure_aha.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/88545807848.pdfIn PDF document text
    • https://s3.amazonaws.com/pokixovuxik/14090662892.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/91178286488.pdfIn PDF document text
    • https://s3.amazonaws.com/gezetega/22649367626.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_off0000e926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE926 4884 bytes
SHA-256: b06c37a22d940434833ed2b819b8f5e0ca1337e655886c8c8f3fccd32cafacbd
font_01_sfnt_off0000f9cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CB 10992 bytes
SHA-256: 87f2a29b10ea204d7e7087a402e56bd822695f8ac635f1323218d13888acf758
font_02_sfnt_off00011f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5D 16092 bytes
SHA-256: 00ddea8d7502d0d4cc2a6bd1357d7ae51b57f9cccd4c604899cd49251e625e22
font_03_sfnt_off00013418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13418 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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