Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ae956151b1a05a3…

MALICIOUS

PDF

58.6 KB Created: 2020-08-01 03:36:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7991e398494214432f99adfa2963bffe SHA-1: b52b0651016576e9ca0882108ecad6377cfd6956 SHA-256: 3ae956151b1a05a33d7e01fbc1dc78b6e8bcea0bee2466d3512374ce7a287c83
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a known malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=rails+has_many+through. The document body is heavily obfuscated and contains remnants of the URL, suggesting it was used as a lure. No scripts were extracted from this sample.

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=rails+has_many+through In PDF document text
    • http://files.ucfrugby.org/uploads/1/3/0/7/130776205/91542e4685ce4f.pdfIn PDF document text
    • http://files.playistheway.ca/uploads/1/3/1/3/131381411/larerewud.pdfIn PDF document text
    • http://files.highspringsmuseum.org/uploads/1/3/2/6/132681617/ae3998c.pdfIn PDF document text
    • http://files.marsitlab.org/uploads/1/3/1/3/131381681/1202565.pdfIn PDF document text
    • http://files.mainehunterjumper.com/uploads/1/3/1/3/131380052/dojagozaxe.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/1/0433/0687/7080/files/soreluseloxajakikolo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/50029628578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1888/7073/files/rupazijemojaxivadarupeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexanenivoxepabulolud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8487/3879/files/91342965846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4444/6118/files/nirulur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9311/5558/files/gowezux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9087/0423/files/wurataka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4751/6325/files/kuzuxolut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9469/5329/files/46046479900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5382/6726/files/23507434168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8909/3018/files/55697076602.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_off000099d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99D6 5000 bytes
SHA-256: a952d8aac3116ccd4f64423bf0b2b9210150ec55a1132f0c1bf79d0c29a0cfe6
font_01_sfnt_off0000aab5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAB5 10860 bytes
SHA-256: 9b6bb9d877ee9abefca04d412a398ac8af0202cf8f35a54b6548728ef318a8dd
font_02_sfnt_off0000cf93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF93 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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