Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a1e9be2d6ff8cfe…

MALICIOUS

PDF

83.6 KB Created: 2021-02-23 01:39:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 483d2de21fa02d6282189db39ebe7703 SHA-1: c1f1eb5d823c8a9b130aa8a0021d4f5048f21a6a SHA-256: 6a1e9be2d6ff8cfe00099f70c180b7bb38e44181c2655648bbd5c73c98b2afb6
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that point to known malicious redirector infrastructure, specifically 'https://yafferge.ru/strik?utm_term=lawless+french+grammar+lessons'. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary function appears to be redirecting the user to a potentially malicious website for phishing or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://yafferge.ru/strik?utm_term=lawless+french+grammar+lessons In PDF document text
    • https://static.s123-cdn-static.com/uploads/4415327/normal_60001a041bdc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_5fdc0deaa3d13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485689/normal_5ff3c079d6e6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475197/normal_601f99c1d3e09.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474478/normal_5fd1373ed99ac.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5ff771ea38ab5.pdfIn PDF document text
    • http://autocredit.moscow/free_blues_radio_uk8ls1h.pdfIn PDF document text
    • http://55571.ru/vobetunegaxazuwowevebezas5re3q.pdfIn PDF document text
    • http://fastgetme.online/hadith_arabica6sea.pdfIn PDF document text
    • http://fitokaps.xyz/bahubali_2_full_movie_480pqhxj0.pdfIn PDF document text
    • http://nout-prodat.site/what_are_the_top_boy_names_for_2020_uk36ckx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491671/normal_5fce2c8aa1f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_6029dd1f833ff.pdfIn PDF document text
    • http://tevfikyuce.xyz/what_savoury_snacks_are_gluten_free9i2oh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388285/normal_5ff16a3b4791c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368975/normal_601ae9803699e.pdfIn PDF document text
    • http://thecet.xyz/34049749143b6jwx.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
    • 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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F1 4988 bytes
SHA-256: 148b7e6e19acddeb4d49a846beee278e998e976ba282eb6a704e9d5ec45ccfd7
font_01_sfnt_off0000f6be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BE 10972 bytes
SHA-256: bfba1069ad8a3c50dd8ba7462addb45d2bbf12d89873f73b67592e519d2c6d5d
font_02_sfnt_off00011b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B58 16820 bytes
SHA-256: caaaf8b4231b3b2ca618a57a000a85a178bf3bbfec8a15adff5f454c244a6fcb
font_03_sfnt_off000132e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132E5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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