Malicious PDF — malware analysis report

Static analysis result for SHA-256 56e3628d8b373425…

MALICIOUS

PDF

71.7 KB Created: 2021-02-27 13:16:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f7e5b156a9cae7bf5fdbeda7b2949611 SHA-1: 93ccb7f44f649aab836f74c39ba60bd03ca13820 SHA-256: 56e3628d8b373425d358580de1e96e375ce7ed371a34cda031419e6b79139963
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://crophysi.ru/award?keyword=defiant+digital+timer+home+depot In PDF document text
    • http://burrrhey.tech/57212718676e70kw.pdfIn PDF document text
    • http://dk-inc.xyz/672623692136wyla.pdfIn PDF document text
    • http://werenntaq.online/1_phase_and_3_phase_motor_differencee4sap.pdfIn PDF document text
    • http://zhigina.ru/gba_emulator_for_android_apk2bj0g.pdfIn PDF document text
    • https://jinokafolamod.weebly.com/uploads/1/3/4/3/134310646/b7a53b4ebbe062a.pdfIn PDF document text
    • https://zogozunenu.weebly.com/uploads/1/3/5/3/135399222/1709694.pdfIn PDF document text
    • https://wotowabe.weebly.com/uploads/1/3/4/6/134688823/fidoponoxibotemuf.pdfIn PDF document text
    • https://wavuzujez.weebly.com/uploads/1/3/1/4/131406867/d0e2f967f8.pdfIn PDF document text
    • https://lesopafewef.weebly.com/uploads/1/3/5/2/135293294/nugowike.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/tesodagiwor/kokenetefojosaripiw.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/batman_o_cavaleiro_das_trevas_mega.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/origin_and_evolution_of_bryophytes.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/dogituloxivepul.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/nibujosewebewenezepamuzek.pdfIn PDF document text
    • https://s3.amazonaws.com/jedaxopopuko/sekudipisijaze.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/3d_max_blocks_interior_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/kewovaladuminalotujusurap.pdfIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/anjaana_anjaani_full_movie_in_720p.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_off0000db52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB52 5276 bytes
SHA-256: d05864afd2a8111330e6095e9b262fc79bb64b70bf1ba7f63670c708afae8c44
font_01_sfnt_off0000ed26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED26 10260 bytes
SHA-256: f997de1e0939a3df24322ed39dd19ae598166304e208906001a2b2490d12c8f9

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