Malicious PDF — malware analysis report

Static analysis result for SHA-256 af006fdaf52f0840…

MALICIOUS

PDF

66.8 KB Created: 2021-02-09 00:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e22d2f2c7e6c2a491a695a28a427ea4e SHA-1: 73d51b587f4d4397b5f8edeeebf00e50591755fd SHA-256: af006fdaf52f084056c64ec479294502275f99d5055086a1b8c04d968d7df4b7
194 Risk Score

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/aws?utm_term=franklin+township+police+report In PDF document text
    • https://cdn-cms.f-static.net/uploads/4485799/normal_601461ec08ba2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415739/normal_5fecbcea4f48d.pdfIn PDF document text
    • http://quickstore.pro/advanced_french_vocabulary_listjzg4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408583/normal_5fd0b777ac7c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374715/normal_60133026df43b.pdfIn PDF document text
    • http://bbflowers.net/what_is_the_word_equation_for_fermentation_in_yeast_and_bacteria4ewsi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383795/normal_600adb1fb57e6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bojonovaja.rf.gd/beautify_app_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/sheetrock_around_outlets.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/cours_et_exercices_corrigs_d_algorithme.pdfIn PDF document text
    • http://kanisal.epizy.com/jotafesu.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/57088377651.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/1301189550.pdfIn PDF document text
    • https://s3.amazonaws.com/lodazojamuva/cast_shadow._psd.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/discworld_unseen_academicals.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_off0000c9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B5 5132 bytes
SHA-256: a2ab8dca532ce81a3795fc7c70bc95c8ac25f2574aff09ab90e2e46f50f30112
font_01_sfnt_off0000db3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3F 10352 bytes
SHA-256: 6a680a124fbdb96c1adcab02c246a6b2be260879c96d3204531ded1a6a549102