Malicious PDF — malware analysis report

Static analysis result for SHA-256 1db5c0c291ddf8ff…

MALICIOUS

PDF

67.9 KB Created: 2020-12-22 14:57:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 68f9e6fc505d5278935c6ef504c39603 SHA-1: 1ec50c029e281b147d0bd6950f3357e40a1e5b2e SHA-256: 1db5c0c291ddf8fff42d4a7930a71ad5c30b23ee8be8b73a8251834bcdd32ef4
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a phishing attempt, specifically advertising 'free dating sites for over 50 in canada' to entice users to click on the malicious URL. No scripts were extracted, but the overall structure and content point towards a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/strik?utm_term=free+dating+sites+for+over+50+in+canada PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413469/normal_5f9c57301f227.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470961/normal_5fc4dd825d31f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383918/normal_5f8c9ff1959ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487200/normal_5fb355e9c4051.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371553/normal_5f92ab5eda960.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/fopalew/jonas_brothers_only_human_song.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/places_to_shell_pecans_near_me.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f2f6c89e1c4b8fbea157/t/5fc469bbcb3e0f5771dd2500/1606707643611/51763289474.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2c3c5b7bc966055df3f1/t/5fddb773f3f88b619ffaa057/1608365940151/jensen_group_annual_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc375e3ab79f442f239d171/t/5fccb30b33187724c4edefe6/1607250700659/folakitepobajilurotogu.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/bpi_online_application_form.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfdc47a13a450babee0d2c/t/5fc3b0762dd96f59185e95a3/1606660214711/cannonbolt_ben_10_reboot.pdfIn PDF document text
    • https://s3.amazonaws.com/pululusodogi/31364527539.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_off0000cdc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDC5 5440 bytes
SHA-256: f42ac355f25e633817408a92151b0620c6bbdfc38bdac9cbe4e406ccead9ec0d
font_01_sfnt_off0000e066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE066 10092 bytes
SHA-256: 7065b4a443878b645c19fc4a1563fe6463ab014714f45fd8e167335eb7dbcae0

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