Malicious PDF — malware analysis report

Static analysis result for SHA-256 25f31f70255c28c6…

MALICIOUS

PDF

46.2 KB Created: 2020-08-03 02:29:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40d05ae92f9a00daf8ea143bd4ee4feb SHA-1: dad5f0d758b820fe7e734cd14512ffa6c65d5f82 SHA-256: 25f31f70255c28c6eeee94891adab200c09ecac93d70bb371d8a906509f0c5ec
202 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, with a critical heuristic firing for a 'PDF_SEO_LINK_FARM'. One of these links, 'https://ttraff.cc/pify?keyword=html+embed+pdf+from+url', is identified as a malicious redirector. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further suggests a lure to entice users to click these links. The document body, though heavily obfuscated, contains references to these URLs, indicating a likely intent to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/pify?keyword=html+embed+pdf+from+url In PDF document text
    • http://files.pobny.com/uploads/1/3/2/7/132712057/luzore-vikenipivulare-jefokifamonu-bimonevufu.pdfIn PDF document text
    • http://files.masjid-al-rasool.com/uploads/1/3/2/8/132814247/82416441.pdfIn PDF document text
    • http://files.earthchildbooks.net/uploads/1/3/1/3/131379312/zilujopurudopab.pdfIn PDF document text
    • http://files.dancevibessf.com/uploads/1/3/0/7/130739646/d3c59e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7100/3037/files/67218879605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/68924236263.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5083/4847/files/87847059571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4047/2229/files/xeredimiser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/jufinokopiniledetegido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9524/2392/files/sebozosameb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0178/1156/files/61855142582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8009/6667/files/81045355280.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/66571826194.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3260/8921/files/nazibavas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4444/5092/files/sixaxodid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3960/3360/files/zaduxajekojadudilolofo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000062ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EC 4628 bytes
SHA-256: 24e1adc849b8748c1745d4653210b68c2659af31a8a0133e129e5175fce313fe
font_01_sfnt_off000072a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A6 13520 bytes
SHA-256: cd23606320a8a5dcf465a056e12f0a3ff905eeded90e3906a0bdba78f11a5a1d
font_02_sfnt_off00009dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378