Malicious PDF — malware analysis report

Static analysis result for SHA-256 da58f617f27ed777…

MALICIOUS

PDF

74.0 KB Created: 2020-11-26 05:20:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 701d16079554b81f78a83915bf17c3d0 SHA-1: 73b694568d63a75ee30adb30cce85641158ab3ed SHA-256: da58f617f27ed77793f3a556d6c33d5f04f16b4c1e4a724e75f6847afb6f054c
254 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a critical finding of a link to known malicious redirector infrastructure. The embedded URLs and the document's structure suggest an attempt to trick users into visiting malicious sites, likely for phishing or to download further malware. Although no scripts were explicitly extracted, the PDF structure and link farm heuristics strongly suggest an attack pattern involving redirection to malicious content.

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
  • 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://ggtraff.ru/123?utm_term=how+to+patch+psp+iso In PDF document text
    • https://cdn-cms.f-static.net/uploads/4458840/normal_5fb2c84259698.pdfIn PDF document text
    • https://tubenuluni.weebly.com/uploads/1/3/1/4/131437864/batezumezesaragimil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366359/normal_5f8dc3a2cc713.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/biwoxelajobujaki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374980/normal_5f9b9e8a1f94f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367645/normal_5f8757991698a.pdfIn PDF document text
    • https://sojizekupiguj.weebly.com/uploads/1/3/4/5/134586608/8814800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383470/normal_5f9a9ce1445d1.pdfIn PDF document text
    • https://biwizifu.weebly.com/uploads/1/3/4/5/134505058/91ac8fa64a2362b.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/busutafitufe/almighty_god_idle_clicker_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/vba_excel_tutorial_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc2aed23-291c-47cf-b08a-5d7389055506/fiwifutibasoluguwino.pdfIn PDF document text
    • https://s3.amazonaws.com/wofaxil/kopudufarewin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5dfa71e1-3956-475a-9a64-02f11212027b/32603528178.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA4 4948 bytes
SHA-256: 45487d3ba37cbd12d411f71d68fcf82432f07474b180d03e72dc4641bef4a455
font_01_sfnt_off0000dd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD87 11848 bytes
SHA-256: 61bb5bbbca05733e036b41056314e8933f983cc6fe41c227fd87c98d2f011f07
font_02_sfnt_off0001046b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1046B 16092 bytes
SHA-256: ea75db71c9df7250347a03039f742fcd189f5fc3f08964e696816fa8b5227073