Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f7380c725257b9e…

MALICIOUS

PDF

71.2 KB Created: 2021-02-16 23:43:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce31dc5ff1a0ea82f03b68679123650d SHA-1: 0e9d7059f84017abd7d782ab6e037c9ede74ef59 SHA-256: 1f7380c725257b9e551977435e3d2005eb8cb5f43e2731a4f9b19b3e454f593f
216 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
  • 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.
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://druttle.ru/wix?keyword=open+arms+women%2527s+shelter+kokomo+indiana PDF link annotation
    • https://kaxudafesin.weebly.com/uploads/1/3/4/3/134355678/voxak_gigibomoxadirid_nekus.pdfIn PDF document text
    • https://regutipedazuvi.weebly.com/uploads/1/3/1/0/131071249/a9d05cfc5.pdfIn PDF document text
    • https://fevolubepekero.weebly.com/uploads/1/3/2/3/132303134/3053347.pdfIn PDF document text
    • https://lewefuno.weebly.com/uploads/1/3/4/0/134041273/xadixarosi.pdfIn PDF document text
    • https://pijuzuzubafewo.weebly.com/uploads/1/3/2/6/132695302/jeridowimadaba.pdfIn PDF document text
    • https://kutawujotin.weebly.com/uploads/1/3/4/0/134016956/xipumapu.pdfIn PDF document text
    • https://gonufefimexej.weebly.com/uploads/1/3/4/8/134892828/xoranelixodip.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/metubevozisul/je_bois_boris_vian.pdfIn PDF document text
    • https://s3.amazonaws.com/vavale/55457247133.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/71763278949.pdfIn PDF document text
    • http://fiduritunibo.epizy.com/majora_s_mask_3d_strategy_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jivala/atrocities_amendment_act_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/tosevud/office_building_plans.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/xejoxipumetomebevuxolabil.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_off0000d8d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D4 5416 bytes
SHA-256: 1dd892a15a1f41dededaf9681ee0237eb69a340e5be4346903eae6abe10abf28
font_01_sfnt_off0000eb25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB25 10828 bytes
SHA-256: 88e60fbbf855d76a148c3066693d842d82a9acd036aaa84c5f6dc2138582ca34

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