Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aca191e62eed865…

MALICIOUS

PDF

41.9 KB Created: 2020-08-09 03:32:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 51df0240e751c6476ed8a957487ca5da SHA-1: 2d50b3b121f5f1ec10a60451b439b9b34cf8cc29 SHA-256: 1aca191e62eed865b1ab6bcd8ec1ef152837325a73345d29d877ef727baa425c
194 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=capitalization+and+punctuation+paragraph+worksheets+pdf', suggesting a lure to external malicious content. The presence of a link farm heuristic further indicates a malicious intent to redirect users to potentially harmful sites.

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=capitalization+and+punctuation+paragraph+worksheets+pdf In PDF document text
    • http://zejusakud.moyanicheallaigh.com/uploads/1/3/2/7/132740405/kumog-fegevowujo-jozoduwaxovaf-retiv.pdfIn PDF document text
    • http://files.esmacats.com/uploads/1/3/1/6/131637316/7769727.pdfIn PDF document text
    • http://files.pfalzerwald.com/uploads/1/3/2/6/132681517/jezizukiraxape.pdfIn PDF document text
    • http://files.sablecatalchemy.com/uploads/1/3/2/6/132682820/zejixaga_nerakerelutipe_polifep.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/1/0432/8544/6824/files/mofisavitezebusoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4666/6389/files/bk_precision_880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3525/5203/files/podajotiramaxowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/49809249685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7175/0822/files/56509684417.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2878/3002/files/mafulukiwudiwafuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2729/1547/files/file_tidak_bisa_dibuka_di_outlook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9030/3381/files/reflexion_sobre_la_armadura_de_dios.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/bujogejev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5857/files/rigesit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4516/5975/files/91617898823.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000639a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639A 5528 bytes
SHA-256: 8efa03f07ac3c95ef74be87e4a8e181c1c3aec320df84eea5d80e525cd7048c6
font_01_sfnt_off0000767c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767C 10440 bytes
SHA-256: e1412bbf4f74401776cbbf6d29a5bc625866b94cd55b677959df85037de8d200

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