Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f3908e674e56d69…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 06:39:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 447bbd0e89a5a5b414045d6ba6f2e46d SHA-1: baa2eeb048c6d59fda2eae278ac73bca3013f407 SHA-256: 7f3908e674e56d69cf37202f1f4e63080d9ef3967da7f194c28a809e4d775a12
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/wix?keyword=service+manual+for+2007+750+honda+shadow+spirit In PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/voxepivekogu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500201/normal_5fe51fced5fce.pdfIn PDF document text
    • https://fexedewikefitug.weebly.com/uploads/1/3/2/6/132681233/bcc016.pdfIn PDF document text
    • https://silajawa.weebly.com/uploads/1/3/4/3/134339193/zupon-varuritixo-tavofekikofijon.pdfIn PDF document text
    • https://tamaxanafe.weebly.com/uploads/1/3/1/8/131856242/3281579.pdfIn PDF document text
    • https://vedexojofidas.weebly.com/uploads/1/3/4/5/134581268/wabaduriluzibej.pdfIn PDF document text
    • https://fuzewejobedogu.weebly.com/uploads/1/3/1/4/131482867/8310909.pdfIn PDF document text
    • https://pimujupaz.weebly.com/uploads/1/3/4/4/134440235/ririmizazigukav_dutetikupukolak.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/sixenogafopoj/decision_support_and_business_intelligence_system.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/business_income_tax_form_20c.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/49311840806.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/61060765899.pdfIn PDF document text
    • https://s3.amazonaws.com/juvuraguvutoxif/farm_machinery_value_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/batiku/werunugojeli.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/arya_2_malayalam_movie_dvdwap.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/bluebeam_revu_2018_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/vudivuzakal/652655409.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_off0000d6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6F9 6128 bytes
SHA-256: 50cef2eb6fdf255e6cbcf3dc81dab351ea1d2b187a09a629110c9da50bfeefc8
font_01_sfnt_off0000ebc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC2 11776 bytes
SHA-256: 036b10890db4639ce690c3b99f0cb1b6e84e9eee14158acb294bf916f2a33957