Malicious PDF — malware analysis report

Static analysis result for SHA-256 803c7ede62cb1c78…

MALICIOUS

PDF

44.1 KB Created: 2020-08-04 06:55:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f0e336eb2f7ec9be4028ddbd47b47e1c SHA-1: 3ae5ac02ebf4e5ec27f8fe22786188b01351f365 SHA-256: 803c7ede62cb1c780f7cfe051779583c32aff9039a6b5ef0f540954da15cb0b4
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service (ttraff.com) which is known malicious infrastructure. These links are presented as free PDF downloads, likely to trick users into clicking and being redirected to a malicious site. The ML classifier strongly supports the malicious nature of this PDF.

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=database+management+system+using+sql+pdf In PDF document text
    • http://files.bgesteve.com/uploads/1/3/2/7/132740413/1344445.pdfIn PDF document text
    • http://sisulanom.dubcobball.com/uploads/1/3/0/7/130775436/tadejefivesav_mewidepavotigiz.pdfIn PDF document text
    • http://files.balmdotcalm.net/uploads/1/3/0/8/130814976/6913250.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/1/0431/6574/5309/files/10257090144.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2737/9877/files/activity_books_for_11_year_olds.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4061/1226/files/83054470169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4972/2790/files/vuveturifelulu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0741/8273/files/sipije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5031/9517/files/kopinonorixage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3631/9639/files/rikofoxarariviwajasugizer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/66137309271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4550/2626/files/jolotomotijogebex.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_off00006bf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF1 5632 bytes
SHA-256: a9627ee667cbb76c2b75090a007434a3eb54b1f70e2bed7ee3c0340b29747e88
font_01_sfnt_off00007f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0B 10864 bytes
SHA-256: 24f78e4c53c9693b5fcc3470553c31db5a212370cc9af4fd6b1941527100ebaf

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