Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba0b5ce37b57c99b…

MALICIOUS

PDF

80.2 KB Created: 2021-01-26 02:39:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 8ffff594f6f3c20eb1333f8b0abb9395 SHA-1: 6fdc8514d51ede79936082e5593bb87db3eaeb85 SHA-256: ba0b5ce37b57c99bc1405a4648cbbcd64558647722d687c3bd3f57033f1a3d79
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://trafffi.ru/123?utm_term=gas+buster+charging+handle+for+sale` suggests a phishing or social engineering lure, potentially leading to a malicious download or credential harvesting. No scripts were extracted, but the PDF structure itself contains external URI references.

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://trafffi.ru/123?utm_term=gas+buster+charging+handle+for+sale PDF link annotation
    • http://onlajn-kassa.ru/fotarezukesikizowfdya2.pdfIn PDF document text
    • http://leftoutclub.com/raspberry_pi_zero_pinout_pwm2iy0m.pdfIn PDF document text
    • http://regvoolkim.website/62902545557jetjp.pdfIn PDF document text
    • http://mjawebdesign.net/linkedin_learning_logocoh9u.pdfIn PDF document text
    • http://auto-fishing-rods1.club/one_punch_man_destiny_roblox_wiki_best_classt00ti.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/tomamujuf/13204077721.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/interview_questions_and_answers_for_experienced_c.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/64001772748.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/printable_farewell_card_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/seventh_day_adventist_english_hymnal.pdfIn PDF document text
    • https://s3.amazonaws.com/memexelu/43655390071.pdfIn PDF document text
    • https://s3.amazonaws.com/kumasala/cheap_thrills_lyrics_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/fotolia_answer_4_letters_108.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/54854426969.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/kodagu_gowdalli_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gawabog/luwizafifepebilit.pdfIn PDF document text
    • https://s3.amazonaws.com/lunojol/wekunasogofome.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00010cdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x10CDD 22788 bytes
SHA-256: 27adf09c9224c04416b5e657984a7d1f3400afd4866d49fb11311199d18f8679
font_00_sfnt_off0000d517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD517 5456 bytes
SHA-256: cc88cb13368dcc5d9ed8554cfec381f5f01189c3373cc83071f1e48a16598940
font_01_sfnt_off0000e79b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79B 10832 bytes
SHA-256: 1d37f15654ca41a2039609b2e2bc0c278d97033eeb0d74116146a6a1d6a18405

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