Malicious PDF — malware analysis report

Static analysis result for SHA-256 48c270375a612d0e…

MALICIOUS

PDF

38.8 KB Created: 2020-08-16 22:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e2a3c1e61dd72ec52cad2cfb00e43c64 SHA-1: aae9b9955be582b166d0677802678d81df39caa4 SHA-256: 48c270375a612d0e72b73614eb8feb20087c13ea7a8c489ed616d17ed3123863
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a malicious redirector link disguised as a download for 'Filezilla server old version'. This link, https://ttraff.com/pify?keyword=filezilla+server++old+version, points to known malicious infrastructure. The document also hosts a large number of other PDF links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://ttraff.com/pify?keyword=filezilla+server++old+version In PDF document text
    • http://files.winfielddesigns.net/uploads/1/3/0/9/130969740/zirowojuzef-wavukunitumo-zorizaxadeg.pdfIn PDF document text
    • http://files.shioyacountryclub.com/uploads/1/3/1/4/131409909/fetitafotawos.pdfIn PDF document text
    • http://files.smshrvatska.com/uploads/1/3/0/9/130969826/wezakiguwidalebuz.pdfIn PDF document text
    • http://files.nancicharpentier.com/uploads/1/3/0/7/130775893/59a2281cabf8b.pdfIn PDF document text
    • http://ruzamuxun.emboldenfestival.com/uploads/1/3/2/6/132681862/9444922.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5563/5871/files/81226150377.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9884/7896/files/94758868766.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8127/7342/files/gupozowerezutiwotilafod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9150/6840/files/susixovobovuwexezik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/71968707825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9755/5093/files/3430460552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1267/0111/files/luwageg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4945/0663/files/60905179850.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D92 4884 bytes
SHA-256: 548e411c9c1f48f3347d0672683f6c9930ed85a9894779ccb6585f98613f72a6
font_01_sfnt_off00006e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E41 9516 bytes
SHA-256: df7dc117d1007d288b38b5727fb463395743294182ba4c4f51033bd1559f898d

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