Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13e07fac41fbdd1…

MALICIOUS

PDF

71.8 KB Created: 2020-11-14 05:31:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 413654d300d4add18d2e3d64c28f23e2 SHA-1: 05d2c9fa7922c6fdb9388c7996bb42b13cb33831 SHA-256: f13e07fac41fbdd1ca00d047df5175b3bd7f790ee5efa1cd6c2b47d15c951985
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://ggtraff.ru/123?utm_term=blocky+cars+online+mod+apk+2020 In PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/zatug_vemaluwava_pizibu_zizux.pdfIn PDF document text
    • https://tunuwowidu.weebly.com/uploads/1/3/4/6/134606858/162196.pdfIn PDF document text
    • https://damijuvik.weebly.com/uploads/1/3/1/3/131381376/dodowivezitoj-mubabo-puveludujolefas.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/5574010.pdfIn PDF document text
    • https://beluloxepivizor.weebly.com/uploads/1/3/4/1/134131295/9285694.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/polojuliragam/el_abecedario_en_ingles_para_nino_de_11_anos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/769af822-cc31-4655-89f6-6c1c32a480b6/20437737167.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/kawibokupugana.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/uniform_motion_physics.pdfIn PDF document text
    • https://s3.amazonaws.com/waxejajinigafu/25267956959.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/ratijajomikovidab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16d9bc34-0dfc-4639-a053-87f1589b543a/paligimunujosuf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd0ec9be-c3f3-4526-8fda-3f876868b06f/a_girls_guide_to_depravity_full_episode.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b056b376-81ef-4d60-8f08-0e1ddc49f71a/65590418425.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90b89a4a-6e45-41f4-9ab8-8912974e4015/40938187764.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_off0000dc0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC0A 5708 bytes
SHA-256: 875a849324751bdcac3e7eef9c32e22c8d875c83c806c56541685fd997982cff
font_01_sfnt_off0000ef6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF6C 10124 bytes
SHA-256: 0ae1fdf56aebd67afdc7caa0a2cda0d52c4766f716217978f8d9f4d563b85fa2

Open this report in the interactive analyzer, or submit your own file for analysis.