Malicious PDF — malware analysis report

Static analysis result for SHA-256 22dacd7c2366fc42…

MALICIOUS

PDF

82.8 KB Created: 2021-03-05 01:53:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 6d73916b8f708e4e676a7334e5c01aae SHA-1: bc6fe216c6a74d8d6c50a1b2c60371c74a5853ac SHA-256: 22dacd7c2366fc42a31c47fb3dfb4a6423b58046ae3dd242489544cf79d88e95
194 Risk Score

Malware Insights

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

The sample is a PDF document flagged as malicious by multiple heuristics and an ML classifier. It contains embedded links that redirect to known malicious infrastructure, specifically identified as a redirector for free-download phishing. The presence of these links suggests an attempt to trick the user into visiting a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/123?utm_term=jean+klein+books In PDF document text
    • http://trysucre.pro/android_wear_watch_faces_2018vj46j.pdfIn PDF document text
    • http://mon-compte-cmb.best/wojedozarilufalitines814x.pdfIn PDF document text
    • http://majikok.mygamesonline.org/60042632479.pdfIn PDF document text
    • http://zitukuwekoba.sportsontheweb.net/bimujedus.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/is_india_stock_market_open.pdfIn PDF document text
    • http://karnaval.host/tinkers_construct_2_modifiers73k1f.pdfIn PDF document text
    • http://haifaiv.ru/bissell_poweredge_pet_vacuum_81l2auuzq1.pdfIn PDF document text
    • http://mutodute.22web.org/facebook_likes_booster_apk.pdfIn PDF document text
    • http://waliduv.mypressonline.com/review_skycaddie_lx5.pdfIn PDF document text
    • http://health2health.online/what_are_the_8_steps_of_critical_thinkingapp1x.pdfIn PDF document text
    • http://detonic-official.website/kenmore_elite_smartwash_quiet_pak_9_troubleshootings6yr6.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/pafiganovavi/gisazanekogenonis.pdfIn PDF document text
    • http://fewilux.rf.gd/elementary_differential_equations_rainville_bedient_solutions_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/83954876943.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/american_slang_expressions.pdfIn PDF document text
    • https://s3.amazonaws.com/zevutebulaworel/cambridge_primary_ict_curriculum.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/brocade_6505_san_switch_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/4541418412.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/jujofejakigeziriru.pdfIn PDF document text
    • https://s3.amazonaws.com/muvazi/7400964960.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_off0001077f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1077F 4776 bytes
SHA-256: abae561c853629a728b9d05c651f1c7c30033933c44c430f07ed17870e01e693
font_01_sfnt_off000117d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117D2 10880 bytes
SHA-256: 70f3ab64ed4be1aea66c3d302214abcfcf712efc6250de8fabbbb192dfab7462

Open this report in the interactive analyzer, or submit your own file for analysis.