Malicious PDF — malware analysis report

Static analysis result for SHA-256 164ee6dbe9cf0c83…

MALICIOUS

PDF

61.0 KB Created: 2020-12-21 16:40:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 79f3747ffe6ff72c48fc9cafc0a0755e SHA-1: f95cb263b1eb33d513c978286fbf348238ead1e5 SHA-256: 164ee6dbe9cf0c83e8ab17e6878333df648c2f51bbbaaae19c79a4215612a3f5
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 'https://traffmen.ru/123?utm_term=katelyn+nicole+davis+video'. ML classification and ClamAV also flagged this file as malicious. While no scripts were explicitly extracted, the presence of a malicious URL strongly suggests an attempt to lure the user to a compromised site, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=katelyn+nicole+davis+video In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa4492d3-d70f-43ae-a331-c4b4321ed43f/ketogenic_diet_book_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ceabc246-29be-4393-9503-86ded9943fe7/riddle_school_1_walkthrough.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b66da97-87c9-4bb6-b457-c952450c1431/sevdim_seni_matematik_indir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af28808-eb5d-4242-b3a8-9e55462a5d6f/mopaveg.pdfIn PDF document text
    • https://s3.amazonaws.com/pizexopenaxu/reflexive_pronouns_worksheet_grade_3.pdfIn PDF document text
    • https://s3.amazonaws.com/lanaladu/64232613116.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdea684ff074777c984c22e/t/5fdfa1bed85ca264421ba013/1608491455839/alien_and_sedition_acts_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f945a749-a96f-4482-9e7d-599cd8c4370b/31521011103.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e29e649f-d2bd-49e7-a23f-8aa8d882d724/zikigikapixuneni.pdfIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/blitz_dual_audio_free_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/tibovubowilex/duracell_1000_charger_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28364c89e1c4b8fc8bd46/t/5fc38c139ee0f32b87c12de0/1606650900097/another_word_for_driven_to_succeed.pdfIn PDF document text
    • https://s3.amazonaws.com/tutasujal/leguwodobemes.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/xejebexixeniripe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b46d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB46D 4968 bytes
SHA-256: 96040d385f7ff2ef0be3da548621d9021d59ab6ba22c1d3cf548d9140ab9a805
font_01_sfnt_off0000c579.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC579 9876 bytes
SHA-256: ca2be5d7eb1350db5bcc525434dee4ac7c4acb0626910138a72828c50664e44d

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