Malicious PDF — malware analysis report

Static analysis result for SHA-256 5aa6dd06ed9542b4…

MALICIOUS

PDF

35.0 KB Created: 2020-08-12 03:12:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a863f4865fc992c027e3f81c4780ec36 SHA-1: aa15278bc3445e44ab3cd15b18d0835b3c3f8b9a SHA-256: 5aa6dd06ed9542b4404d4707356f14e64f1f4dd1aede4fb994b52a86fbd7d58c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external PDFs, many of which are hosted on Shopify and appear to be part of a link farm designed to improve search engine rankings. One critical heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains the same redirector URL, suggesting a phishing or scam attempt disguised as a document download. 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.cc/pify?keyword=dimensionality+reduction+by+learning+an+invariant+mapping+pdf In PDF document text
    • http://files.tallahasseechinesemedicine.com/uploads/1/3/2/3/132303012/majejonex_dilate_fuxel_linubimodok.pdfIn PDF document text
    • http://files.mcclellandcollegemusic.com/uploads/1/3/0/7/130739727/ce2ea8bafe4b92b.pdfIn PDF document text
    • http://files.carsesus.org/uploads/1/3/0/8/130874524/mumukavakirirep-bixusopumekaz-xumezax-putof.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/1/0432/5310/4790/files/xokonozidivirimubifefor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/94178215600.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5590/6973/files/amiodarona_dosis_de_impregnacion.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4094/5829/files/61378645965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/nexus_plugin_fl_studio.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3602/4742/files/54106634294.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3061/8020/files/14422746815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/vosugo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9850/5369/files/gagimasakuwipivafenufinek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5431/6197/files/zofepemepu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/73637685282.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 6

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_off000048b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48B7 5776 bytes
SHA-256: 8127d4bfab367dd10ae89bbddb99440f2c990acc6cb45d489962a8e9d8ef6d9e
font_01_sfnt_off00005c51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C51 10108 bytes
SHA-256: 8a39785679d310dd195fdebf8a798149ca62b0ccef9442ef35fc8d64f9f6276c

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