Malicious PDF — malware analysis report

Static analysis result for SHA-256 784a1929442c45f7…

MALICIOUS

PDF

78.3 KB Created: 2021-04-22 13:34:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 36448ccac81ee254ce35ff93ba708696 SHA-1: 2f42b1859865466ebc149d9fb4e86ca1f5e9531c SHA-256: 784a1929442c45f7bab9962babb368b2e0cc4ba6b59cd186f05043e2bfcd850d
186 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many hosted on disposable domains, suggesting it functions as a link farm. The primary URL, https://gimoguvi.ru/strik?utm_term=duraflame+electric+fireplace+insert+lowes, is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the PDF structure and link farm heuristic point towards an attempt to redirect users to malicious content.

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://gimoguvi.ru/strik?utm_term=duraflame+electric+fireplace+insert+lowes PDF link annotation
    • https://cdn.sqhk.co/zapajugadira/dgctOEh/52805818126.pdfIn PDF document text
    • https://mamasikixatok.weebly.com/uploads/1/3/5/9/135961158/kimugomifegize-pitowaf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469633/normal_5ffa6df86d7fb.pdfIn PDF document text
    • https://fawofasoz.weebly.com/uploads/1/3/1/4/131454040/kepuvevagemefo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420431/normal_6058fd1a974e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407777/normal_601dc35b5dd46.pdfIn PDF document text
    • https://cdn.sqhk.co/noruwotil/isji5v0/dave_tv_program_guide.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373788/normal_5ff442bfc78d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483851/normal_5fc5acfcb7828.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_6056c962a9cd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_5fd3d3430e3aa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460709/normal_5fe724e182cc5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408599/normal_5fdfab61608f3.pdfIn PDF document text
    • https://xufolonul.weebly.com/uploads/1/3/2/6/132695880/0dde8080218.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/jiJNgjU/nuclear_bomb_3d_wallpaper_for_phone.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9f503c4c-bf14-4dcb-9a7a-68e0e5bb3568.filesusr.com/ugd/8ac1ab_5abd488b57574c489f9828f172190d7f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d631ecb5-2140-46d9-92ea-b8c2b374fa50/star_trek_the_next_generation_movies.pdfIn PDF document text
    • https://16cc4848-9a85-487f-bc1d-da55f68f8448.filesusr.com/ugd/dcf86b_32ad98295d93453381a72aedd1cdad51.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f082c6-c554-4949-bec1-512da802a09e/tunilonetutevabavije.pdfIn PDF document text
    • https://ae26bae5-b1f3-4fb2-a0ba-5d2f2d23988c.filesusr.com/ugd/aec2ea_e8e394ff0cae4f36a12b712c7fec7f83.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e72f70c8-fec8-41d0-84d6-090b65f1e690/how_to_link_paypal_account_to_wix.pdfIn PDF document text
    • https://3e3188f7-d9e9-48da-9af6-4e6760718ee0.filesusr.com/ugd/4f7562_959795e5719f452ba3d0fec19e9b754a.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_off0000f37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37A 5252 bytes
SHA-256: 865ccd715e3ff570798a9bd7433ae5ea3e2f8e474a2b7029876032c795bf0b21
font_01_sfnt_off0001055a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055A 10520 bytes
SHA-256: 97e36cd373deb0ea3f184422d2ec3c614d6bf7e051cac875a3753e409fc85e02