Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f1ec9b4329afa5…

MALICIOUS

PDF

76.0 KB Created: 2021-05-31 06:07:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 925231d8b8f687a3d24f3256bae36176 SHA-1: 2815fa8ff23dc4ec3e5c96685950ba1bbfc8c436 SHA-256: d6f1ec9b4329afa53658f8d9ca6f8d6987366a01be84b5f6a74abb70cd17783b
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many pointing to disposable hosting, suggesting a link farm or phishing operation. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious sites, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/strik?utm_term=rockstar+full+hindi+movie+download+filmywap PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455179/normal_5ffc0ec66dedf.pdfIn PDF document text
    • https://nuduxojobiri.weebly.com/uploads/1/3/4/6/134629521/2147180.pdfIn PDF document text
    • https://xufetujada.weebly.com/uploads/1/3/4/7/134745175/segabedeb_bipigagesukap_newimimupakevu_xetutama.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447265/normal_600b186255f35.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453333/normal_5ff983630be6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_60669e895e32d.pdfIn PDF document text
    • https://tanipodolotuweb.weebly.com/uploads/1/3/4/4/134457000/8251385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466408/normal_5ff5a7cfebdc6.pdfIn PDF document text
    • https://donoreto.weebly.com/uploads/1/3/0/9/130969624/xavusekepo-volibo-wulelagovepij-sosojogukuwon.pdfIn PDF document text
    • https://sogegagep.weebly.com/uploads/1/3/4/6/134687839/53fd3d1809a8.pdfIn PDF document text
    • https://noxojinuk.weebly.com/uploads/1/3/4/4/134479051/takazosa-raluvedafomexof-saxavaxukik-fivolo.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/aafee3bc-1d6c-4071-903e-a836869459f2/foxilolitokepefigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e1594e7-5568-4362-b9fc-d8b5012a8211/jaxigubo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34369148-a7b0-4cb6-9609-89f646eb7119/odd_thomas_movie_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19a5040c-8ee1-47cb-a2f1-cdd0fd784c16/fofopusomosilidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0df15cf0-3102-4387-8113-3c69806ed5a0/kilixitowajudovesujalad.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72698227-5b7e-4785-89c5-20b0918ebeab/garmin_920xt_master_reset.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87ad9128-6e56-451b-8fda-569aaae5bbe9/bopegarijurofofinexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fdee113c-ac0b-4655-ade2-6a0cff1faa46/is_artemis_fowl_good_or_evil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a92ab96d-7144-4b94-b3dc-f6534b433d0a/pezeseregarifulajotikujuj.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_off0000eac0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC0 5720 bytes
SHA-256: 5c7f1ddbbd432f50a0578fa22dc17aaf3f623c767d408ac426bae4378ff6a2b6
font_01_sfnt_off0000fe32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE32 10732 bytes
SHA-256: f9af91fd13a9469ea89075bf70ab5bb9b87086c880df5e3df6c8a3c77ec182ce