Malicious PDF — malware analysis report

Static analysis result for SHA-256 d60f44cbc3629816…

MALICIOUS

PDF

83.9 KB Created: 2021-05-23 19:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 47b152650e45aab511f60378f80d761b SHA-1: 6579e9286052d2cb975bb982685716bb5b0587ea SHA-256: d60f44cbc362981691ada8f021b8500f975a5e8fae752e145d5d34b8eef1e35c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body, though partially corrupted, suggests a lure related to 'how to make a budget for nonprofit organization'. No scripts were extracted, but the presence of numerous external links points to an attack pattern involving redirection to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.
  • 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.
  • 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://dugedepap.ru/strik?utm_term=how+to+make+a+budget+for+nonprofit+organization PDF link annotation
    • https://fulapelaz.weebly.com/uploads/1/3/5/9/135970028/warilutofepesisos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460070/normal_600a77ab3d8fb.pdfIn PDF document text
    • https://bajevopado.weebly.com/uploads/1/3/4/4/134456845/6997492.pdfIn PDF document text
    • https://sopidafepu.weebly.com/uploads/1/3/4/7/134744384/2078224.pdfIn PDF document text
    • https://sawolopu.weebly.com/uploads/1/3/6/0/136049845/gavuvanotereti.pdfIn PDF document text
    • https://tizidebiwefixim.weebly.com/uploads/1/3/0/7/130739379/tojevawiru.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451021/normal_5ff3b3af997b2.pdfIn PDF document text
    • https://wizitizisib.weebly.com/uploads/1/3/4/3/134361222/08582.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455914/normal_603c322bc4dca.pdfIn PDF document text
    • https://lafatizurekasat.weebly.com/uploads/1/3/4/7/134748402/nitel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428039/normal_60548b89c2a32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_603164534f7f6.pdfIn PDF document text
    • https://kidubaviputotej.weebly.com/uploads/1/3/4/5/134520398/kasesa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_604840a0e893a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5fee379ed55b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413458/normal_600f1ab9d2f70.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/945e9ef0-b4d5-41ec-b256-fd5c313b60af/lekupunusupupuzitapoz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0096d28e-12fc-4bc6-a5ef-0269f5b36757/what_is_the_red_wire_for_when_installing_a_ceiling_fan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d7218d3-5f91-447e-a49a-a3b332966210/18904856485.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43fda3d0-53d9-40a1-b12c-ee02e246802c/makasekiwasenuwamesivivop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ebf0f177-29ff-4739-944b-4311b87f00b0/19094126112.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A8 6588 bytes
SHA-256: 4e1a9c4cb32f1bc4ff176ae4dc1460c31b2d267bf2def0252f23ad2731e7be72
font_01_sfnt_off00010821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10821 5456 bytes
SHA-256: 7d4438725f87d6eaa294481de7efff3202cd204c385b5c3849db52c54ce092bb
font_02_sfnt_off00011ab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB5 11436 bytes
SHA-256: 6a0ba348de2385ddd0f23d5a844a20cbb10d5f50b18c181df0a3e6b11ec36892

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