Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7889ca2e9ff16fc…

MALICIOUS

PDF

48.3 KB Created: 2020-08-06 07:18:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d0f92679653ca02f5391332a80a7ac8f SHA-1: 32f2c78cbe290305d59195f5f58a5061e31c2fce SHA-256: f7889ca2e9ff16fc258defc43e5674791dc574037a105c8ee14bd463bf394f9f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and appears to be a lure related to environmental topics. The ML classifier strongly indicated maliciousness, and the link farm behavior suggests an attempt to distribute malicious content or phish users.

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=o+meio+ambiente+pdf In PDF document text
    • http://files.cooliecollection.com/uploads/1/3/0/7/130740065/lolosidi.pdfIn PDF document text
    • http://files.virginiaasthmacoalition.org/uploads/1/3/1/1/131163684/5949820.pdfIn PDF document text
    • http://files.mrscroninphysicalscience.com/uploads/1/3/1/3/131380847/41c67.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/1/0435/0276/4184/files/xoxukarukuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1231/6584/files/xupotapim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gubiwunezekubukezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1698/5508/files/47502360821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5026/1915/files/rafawufanometorebup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/hey_there_delilah_piano_sheet_music_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/85040683429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9422/8630/files/laketarigos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0936/7461/files/calculus_and_analytic_geometry_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46496449222.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/rojurejudixup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1133/2503/files/dizigew.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_off00007cd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD6 5048 bytes
SHA-256: b1bc83cfd774bbd04995673a63a576b7340f1cdcf1fbf598bfa4b76b6d96393c
font_01_sfnt_off00008de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE8 12312 bytes
SHA-256: 3b2b98cec406a69cb92f7322558f0bb17b50a56c8705ba4196d01d15f78e21ac

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