Malicious PDF — malware analysis report

Static analysis result for SHA-256 d62e40520db1fc27…

MALICIOUS

PDF

120.8 KB Created: 2020-11-09 20:04:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: f0f8e9a35a1ce38448ef5cd9acc9dfdb SHA-1: 798e3d3d8e1cf7e79e9b2e8757905f8e532c9359 SHA-256: d62e40520db1fc2737273a1ca49bc83a35cd0d56a265a8e2ccce860cf8797018
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'traffine.ru', which is disguised as a search result for 'Japji sahib pdf full'. This indicates a phishing or social engineering attempt to redirect the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://traffine.ru/aws?keyword=japji+sahib+pdf+full In PDF document text
    • https://bufibefoxoxopij.weebly.com/uploads/1/3/4/4/134489975/5130379.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/4af6af8969b2be.pdfIn PDF document text
    • https://safusubugem.weebly.com/uploads/1/3/4/6/134609944/5a6142acebccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383566/normal_5f920a10842f7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/subud/case_study_file_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/zarivusikob.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/47826130279.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/jrotc_ranks_army.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/18566673584.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/81843249447.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/32491345615.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 7

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off000199e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x199E1 26200 bytes
SHA-256: 4557a74e725ee4efe840beabb174476949522771e2e0c5dafca97bc0086fe02c
font_00_sfnt_off00013df2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13DF2 3220 bytes
SHA-256: d79750bb2f20a3ba9bb930b6b4b31105ffbe3c34e59909da052283356c1a5161
font_01_sfnt_off00014968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14968 4708 bytes
SHA-256: ebf52b4f1bd7b40833f8f62fef3e2d7561cc738f9a53b8fa0c3f09649dfa75b6
font_02_sfnt_off00015953.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15953 3740 bytes
SHA-256: 814992be763021c11dca23fed22b8bb7a0f9688c8b5af2f3d58b36f318d7b63c
font_03_sfnt_off000164cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x164CC 3912 bytes
SHA-256: b2d23bf538114d98c48d07a0aabfc9e834ba602e079884db4e1e87f27f4d873e
font_04_sfnt_off000173e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173E9 11920 bytes
SHA-256: 7eab42a2ba1dae5ba36d2d2e83dd6c070211d785bb8f8eb0469b939991b67cdc
font_06_sfnt_off0001c714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C714 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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