Malicious PDF — malware analysis report

Static analysis result for SHA-256 e31313899f707754…

MALICIOUS

PDF

73.2 KB Created: 2021-03-06 10:10:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 32b949236464e047830639c2f1e4faa9 SHA-1: 12cd49aa1f3bce9dbd6607fd7baf0d7d62a0e1a8 SHA-256: e31313899f707754119a10e1fb1fe6539679bf96507fd93216fccfb0e457b864
222 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wix?keyword=michigan+ged+study+guide In PDF document text
    • https://wisapemewe.weebly.com/uploads/1/3/4/7/134713478/0913d40cdc841c.pdfIn PDF document text
    • http://napufokotipo.getenjoyment.net/giriridepegirumabuduj.pdfIn PDF document text
    • http://xagimovuroj.22web.org/anniyan_tamil_movie_songs_free_tamilwire.pdfIn PDF document text
    • https://cdn.sqhk.co/fekesolip/egdjchc/samsung_s9_split_screen_gone.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/cfihGge/c64_emulator_android_tv.pdfIn PDF document text
    • https://xefigokilevugez.weebly.com/uploads/1/3/5/2/135299251/c1b555c85979b.pdfIn PDF document text
    • https://cdn.sqhk.co/datolabevev/eicEhcA/kinajo.pdfIn PDF document text
    • https://fofomobagukewe.weebly.com/uploads/1/3/4/3/134352826/lakenemidapiwom.pdfIn PDF document text
    • http://tijukilebag.getenjoyment.net/a_series_of_unfortunate_events_the_reptile_room_book_review.pdfIn PDF document text
    • https://bifukumuvu.weebly.com/uploads/1/3/5/3/135347201/kifisatojajeka.pdfIn PDF document text
    • https://cdn.sqhk.co/dedesonor/tAgcnii/ruramigogoter.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zalowakudedakov.rf.gd/noughts_and_crosses_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kudefem/authorization_letter_sample_to_claim_form_137.pdfIn PDF document text
    • https://s3.amazonaws.com/bajuse/xajupikira.pdfIn PDF document text
    • http://tilixufevoj.epizy.com/zipapezivoditavamipafefu.pdfIn PDF document text
    • http://komupidije.epizy.com/39860469302.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/best_photo_editor_for_android_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/caracterize_o_capitalismo_informacional_yahoo.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/nulakusibaxijuxo.pdfIn PDF document text
    • http://refakozisakuvul.epizy.com/black_and_decker_mini_fridge_directions.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_off0000e34a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE34A 5180 bytes
SHA-256: 6d78d14153d2cdf679e6b200a0ff001d2ccbc2a404bceb3401c401b110c1b07e
font_01_sfnt_off0000f4fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FE 10156 bytes
SHA-256: 90bcf7fb0dc8204a704cdc19e3a1820d3b56d54f7caf299c5ae2c5e0a61a14be