Malicious PDF — malware analysis report

Static analysis result for SHA-256 451f4e3298204a60…

MALICIOUS

PDF

73.9 KB Created: 2021-02-09 05:01:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8e5bf45b262a3b86c732475feac24553 SHA-1: 53e93b04759ef8587b489ec3479810139dc01817 SHA-256: 451f4e3298204a6024c6f530888c8a148eaa66fb91b6f470774e0b037c87cb57
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with a critical heuristic firing indicating a link to known malicious redirector infrastructure. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. No scripts were extracted, but the presence of malicious links points to an attempt to lure the user to a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://yafferge.ru/aws?utm_term=lagu+belahan+jiwa+dot In PDF document text
    • http://mon-cmbretagne.com/33014828162bd9im.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391642/normal_5ffce34a737fc.pdfIn PDF document text
    • http://limecash.xyz/mukokefuopm2h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5fc60b4c60f29.pdfIn PDF document text
    • http://copyrightnotice-ig.com/jegaxokafegezbl99k.pdfIn PDF document text
    • http://afracheat3.xyz/reelsteady_go_downloady3oxl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_5fde03ff48930.pdfIn PDF document text
    • http://salonhq.xyz/mcq_anesthesia_free_downloadffba0.pdfIn PDF document text
    • http://jirafka.space/40826985116tzvrr.pdfIn PDF document text
    • http://sberbank.services/chandelier_3ds_max_free5a7sx.pdfIn PDF document text
    • http://paypallsecurity.com/simple_distillation_lab_reportkarfs.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/timer_30_seciua5m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_6015ff22e1440.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mafolizol.rf.gd/13371248271.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/safcol_bursary_2019_application_form.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/pilikufevatuvaroxolubu.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/guide_de_conversation_pour_parler_franais.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/angus_cattle_information.pdfIn PDF document text
    • http://tedijafubivot.epizy.com/wosirajogusevivikuw.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/class_stylesheet_example.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/asking_and_giving_directions_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/best_auto_clicker_for_android_games.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/rewelogajuvitejefopuj.pdfIn PDF document text
    • https://s3.amazonaws.com/lowebemuwojiso/candy_crush_apk_android_2._3.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC21 5064 bytes
SHA-256: 830482a9bd89e374828718ff13df2148db56e50df4daf538667cb4e517b8e271
font_01_sfnt_off0000dd6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6E 10944 bytes
SHA-256: 0b98205b92fa8f96c926b24aa69ad5a12463498385291a9f3d46416835876172
font_02_sfnt_off00010332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10332 16140 bytes
SHA-256: 5bfda07072dd2e1b0df7f1680a75ba616774ec51e1a09c257f000ba239241e1c

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