Malicious PDF — malware analysis report

Static analysis result for SHA-256 147e8fb451f33a22…

MALICIOUS

PDF

48.9 KB Created: 2020-08-04 01:14:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b827b6b3e91af8032026cb701de31e9d SHA-1: 037b1f3ac3182f22affb0602e67c0b75d79ae201 SHA-256: 147e8fb451f33a220d6cd065826eb515ea6bc917e92723235554ff9a0108107e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.cc) that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be part of this redirection scheme. This indicates an attempt to direct users to malicious infrastructure, likely for phishing or malware distribution.

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.cc/pify?keyword=difference+between+bubble+sort+and+selection+sort+pdf In PDF document text
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdfIn PDF document text
    • http://files.giftsofgracejewelryshoppe.com/uploads/1/3/1/6/131637656/bebubuxapi-tusezuz.pdfIn PDF document text
    • http://files.scaturchio.info/uploads/1/3/1/1/131164421/pubise.pdfIn PDF document text
    • http://files.elcmilford.com/uploads/1/3/1/3/131398560/3584152.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/1/0428/9835/8432/files/telisupuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9853/0202/files/bastien_piano_basics_primer_level_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6075/4582/files/zavawemimebobufam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8692/0347/files/31984002503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3895/files/75004742077.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wulusiwebope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2145/0914/files/55983541937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7754/1791/files/37253813099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0357/6481/files/marvel_heroes_omega_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9652/2398/files/35307356914.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/25829658500.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_off0000769c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x769C 5380 bytes
SHA-256: dd3eea99c570e34c78aeacc7c9a95c18805cba74b7c1fa8620248c4f03d4d26c
font_01_sfnt_off0000890f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x890F 14420 bytes
SHA-256: 5e961b1d361877584410b748e3824b57e22e32a8936cf0e582b0bf551615bbda

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