Malicious PDF — malware analysis report

Static analysis result for SHA-256 a248d0e2ff40c833…

MALICIOUS

PDF

47.8 KB Created: 2020-08-10 03:20:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 200ac3480731fa8389f36cf39bf1a02b SHA-1: 639181673a695419c986125fe5a071fabd0a31ea SHA-256: a248d0e2ff40c8334eee2528f5fb778c051202add0a2cefe512c0943b18892c4
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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.
  • 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://ttraff.com/pify?keyword=toeic+reading+answer+sheet+pdf In PDF document text
    • http://tixop.esteroartleague.com/uploads/1/3/0/7/130739553/b0063d090.pdfIn PDF document text
    • http://files.reevelindbergh.com/uploads/1/3/1/3/131398517/jilomatexuxu.pdfIn PDF document text
    • http://files.fernandojimenezphoto.com/uploads/1/3/1/6/131637108/lepemusisariraw.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0448/1787/5110/files/gojijizoba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0616/3105/files/alexandria_protocol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2072/2080/files/gexexow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9027/9574/files/43797095015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2895/3763/files/sunrise_sunset_boston.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6318/0438/files/valisefevirakezabosito.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/2911708068.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/30913518206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6992/1690/files/wawiburevowegiluwozefejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/famous_biology_scientists.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9866/9220/files/nomezajimazow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1356/0727/files/fiximupudofowibej.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 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6553 1764 bytes
SHA-256: cbe5ca032ab987fa3c7a0ad4f986f7220ced3dcb06ba425b758d465fd3266138
font_01_sfnt_off00006dee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DEE 5428 bytes
SHA-256: 7c27000445201ed461d53468e99edf878e44374824e9b052539b068b33c80a8b
font_02_sfnt_off00008073.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8073 17120 bytes
SHA-256: 1b0a62bd00f88a64e315ecb2a8afef5fc758ed6c4d950652fd001f621f0647ce

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