Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6da70c2205aaedc…

MALICIOUS

PDF

77.7 KB Created: 2021-01-29 04:53:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a0b9c22db39ca3a233a5fa24b0d1c341 SHA-1: 8832338c895b4f3f906ff3f46e1713567ec9c264 SHA-256: f6da70c2205aaedcff9300e294a7e4ef3ef01fd9ad537961ac51084a8977a1c6
196 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
  • 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.
  • 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://bologen.ru/wb?keyword=marketplace%20insurance%20plans%20florida PDF link annotation
    • https://jobalexaxikut.weebly.com/uploads/1/3/4/8/134892204/bigifemikesapar.pdfIn PDF document text
    • http://nisiwitas.22web.org/12th_ncert_biology_textbook.pdfIn PDF document text
    • https://pejudipevunasu.weebly.com/uploads/1/3/5/3/135351173/xewekedubaw-judotuxuzakerel-duwajugo.pdfIn PDF document text
    • http://wuzotevoxed.22web.org/free_bootstrap_template_login_form.pdfIn PDF document text
    • https://jidedenevunuva.weebly.com/uploads/1/3/4/4/134498736/3682957.pdfIn PDF document text
    • https://tezijetukiresu.weebly.com/uploads/1/3/5/3/135394197/lofugoromal-satonowosi-niboxupoteluxod.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/gebukil/chrome_for_pc_xp.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/android_checkbox_custom_drawable.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/animal_crossing_harriet_hair_guide.pdfIn PDF document text
    • http://risuduk.epizy.com/botines_mujer_plataforma_precio.pdfIn PDF document text
    • http://zakivijojinikij.epizy.com/49766133005.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/wemanokajog.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/68223648944.pdfIn PDF document text
    • https://s3.amazonaws.com/kosamupim/miwerejesunuxawawalovuli.pdfIn PDF document text
    • http://votitagupen.epizy.com/sciatic_nerve_pain_treatment.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_off0000ee79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE79 5216 bytes
SHA-256: 7e1d93c96322300e2fb9f29297cd0e5f8ebdb2e13ce9ea01c76464c1bbc2bd63
font_01_sfnt_off00010058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10058 13096 bytes
SHA-256: 27c0e1260b122d9a6a7605a19b5108df2311e993f9ec2520149fb31268147cf8