Malicious PDF — malware analysis report

Static analysis result for SHA-256 d863053dea641151…

MALICIOUS

PDF

71.5 KB Created: 2021-03-06 03:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 03683277fc83af67b23d4a3cb7e95351 SHA-1: de8ae938b8d02e7b7dca9402cd8b3364365c8abf SHA-256: d863053dea641151dc56b21255d2106c3231afcbdb9cdb56999b0e27f046e073
244 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=hp+elitebook+8560p+datenblatt In PDF document text
    • https://mejotozoferu.weebly.com/uploads/1/3/4/8/134866749/jiwopo_vutabujazifa_faparajorekuku.pdfIn PDF document text
    • http://seomagnat1.online/berserk_movie_4_sub_indopilvl.pdfIn PDF document text
    • http://smartcreditscore.info/miranobewiteme8jys.pdfIn PDF document text
    • https://kiwotatuna.weebly.com/uploads/1/3/1/8/131856308/fovateta-fozokomoj.pdfIn PDF document text
    • https://mozufidapu.weebly.com/uploads/1/3/4/0/134012608/db88986811.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2b81f3f0-3f46-42ff-87a7-5865dd96cd3c.filesusr.com/ugd/fb41f9_422fcb1eb9284811a277c9c6ed8f88f8.pdf?index=trueIn PDF document text
    • https://1c019786-7048-4615-837a-ae53f087c4ae.filesusr.com/ugd/8b4172_bda4a2472bc7459abecba61ab90d2d4f.pdf?index=trueIn PDF document text
    • https://e8c82854-2a0b-4c0f-82de-bac600ce06e6.filesusr.com/ugd/d017d5_1a37ad39028d4dd68cc7d25d304a5e36.pdf?index=trueIn PDF document text
    • http://garapaf.epizy.com/27155020981.pdfIn PDF document text
    • https://e9b66cc5-9289-431c-8f17-6739e1cd2d88.filesusr.com/ugd/c8f33b_32374d8679e841949dd611f23a58d168.pdf?index=trueIn PDF document text
    • https://a62e46b8-d933-4087-892c-e5439cec6991.filesusr.com/ugd/e9cba9_8ad62b5b01f34d419cba568fd198f12a.pdf?index=trueIn PDF document text
    • https://49b821e7-ee7e-41b4-809b-d0417b8c1ddf.filesusr.com/ugd/927743_24dde7b7513c41debeb4de414157d147.pdf?index=trueIn PDF document text
    • https://e437b920-fa79-41d5-b67c-0ca059f4e77a.filesusr.com/ugd/d97c10_dc639679dfc948abb4610a2b594cf400.pdf?index=trueIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_33fe33de2bd446848db3268b4ae84469.pdf?index=trueIn PDF document text
    • https://e905a76e-7bc1-418c-be29-e8eda1603e86.filesusr.com/ugd/3fb32a_747801c6fcc846aea080be15b50d74cb.pdf?index=trueIn PDF document text
    • http://tikumomono.rf.gd/zanajubobokibinipi.pdfIn PDF document text
    • http://xijodakofifo.epizy.com/63171882429.pdfIn PDF document text
    • https://b0c090b1-cb02-46d8-8a69-3fb9d82636b6.filesusr.com/ugd/4dbf3f_8cdbf3c805ce4c6d9c519659c552bab0.pdf?index=trueIn PDF document text
    • https://0e67983c-e844-40c9-b604-97311ec94efe.filesusr.com/ugd/6e13d9_93f9aa6d2cc847c2b5957c2971841868.pdf?index=trueIn 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_off0000da61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA61 5460 bytes
SHA-256: 7bfb0ac13f7dfff1342eb7a56ab7a598571eb5507616e3433756b976f254c36f
font_01_sfnt_off0000ecff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECFF 10592 bytes
SHA-256: e28eeb0e3709d76e0e2aa514e20a3104a215ab2547a944ce4f57b1aef05b6950

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