Malicious PDF — malware analysis report

Static analysis result for SHA-256 e72866fb10f21f9f…

MALICIOUS

PDF

71.6 KB Created: 2021-01-22 00:49:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 88202efea1dd5e28f31f7ae701dfae8e SHA-1: 9df9b4f0b30f35340825864b750346a136fb0df9 SHA-256: e72866fb10f21f9f2e5dbaa1075b19ed51e950499a74dac3319411efacc0b6b1
174 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a link to a known malicious redirector, traffmen.ru, which is a strong indicator of a phishing or scam attempt. The document body, though partially corrupted, suggests a lure related to 'Mu online elf leveling', likely to entice users to click the malicious link. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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=mu+online+elf+leveling+guide In PDF document text
    • https://site-1208189.mozfiles.com/files/1208189/splashtop_wired_xdisplay_paid_apk.pdfIn PDF document text
    • https://site-1166608.mozfiles.com/files/1166608/41750619559.pdfIn PDF document text
    • https://site-1175442.mozfiles.com/files/1175442/61221263461.pdfIn PDF document text
    • https://site-1176671.mozfiles.com/files/1176671/58591635481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411918/normal_5fcd41de8c22e.pdfIn PDF document text
    • http://xojopimo.22web.org/18070328468.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bitugoxopezuwu.rf.gd/47624488082.pdfIn PDF document text
    • http://kirigawegugava.epizy.com/bittorrent_free_websites.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/45600948491.pdfIn PDF document text
    • http://putiweg.epizy.com/44263396852.pdfIn PDF document text
    • https://s3.amazonaws.com/tulosa/gizupagobenirixera.pdfIn PDF document text
    • http://sogefotatuledis.epizy.com/logos_quiz_level_12_answers_iphone.pdfIn PDF document text
    • http://wubogijogazerew.epizy.com/35703111673.pdfIn PDF document text
    • https://s3.amazonaws.com/ziwuvijevo/amazon_prime_application_for_android_tv.pdfIn PDF document text
    • http://lenixad.epizy.com/sasulasebidemojunupuwali.pdfIn PDF document text
    • http://gasigigi.rf.gd/dominion_blue_book.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/apa_6th_edition_referencing_style_manual.pdfIn PDF document text
    • http://kititone.epizy.com/bogukamusabiwotigaj.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/82683812832.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE5 4656 bytes
SHA-256: 5cc2b87378d3a5ea1b94baad2d39a8f2a103da1c29ea5d7d68237436c3ecfe80
font_01_sfnt_off0000eaed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAED 11340 bytes
SHA-256: c1854d5cd23f29489df34f70fb8ffe25409e4d62c6fee70635b665592d3b20a3

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