Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4dc20fd586a49cb…

MALICIOUS

PDF

40.9 KB Created: 2020-08-06 20:02:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f254ba83a39047afde55601a437fdb23 SHA-1: 04a6bc4efd4c90b5bb2e6679c36a63d952756d85 SHA-256: a4dc20fd586a49cb06bb985825535fbd1779cd1b4fcfc681f43db1df11b3e8b6
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify-hosted PDFs. One prominent link, https://ttraff.cc/pify?keyword=current+affairs+september+2020+in+english+pdf, is identified as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites through a series of links, 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=current+affairs+september+2020+in+english+pdf In PDF document text
    • http://files.hylandfinancialplanning.com/uploads/1/3/1/3/131379246/cda175251fa695.pdfIn PDF document text
    • http://files.kipp3dacademylibrary.org/uploads/1/3/0/7/130776639/65aedf4ae656.pdfIn PDF document text
    • http://files.rebecca-rammell.co.uk/uploads/1/3/1/8/131871979/nerabelo.pdfIn PDF document text
    • http://files.bemsociety.org/uploads/1/3/0/7/130776327/ruzozudalenoxipife.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/1/0429/5327/7589/files/tuwemiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3239/6447/files/nilopagunamosebo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/41199560049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1540/4695/files/tikalisogixonumavila.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2627/6775/files/fezusuzunana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5542/3383/files/wikatajije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/86245743775.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6336/2204/files/94118381418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/bwv_1006a_prelude_guitar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/d_letter_names_for_girl_hindu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4916/5734/files/besavevisa.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 5

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_off000060e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 5776 bytes
SHA-256: 94be1ac790fadce7a3cf738e4d9e354dfc2ffa61a31eab7155a4451e4ced5f79
font_01_sfnt_off00007460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7460 9968 bytes
SHA-256: cb8befd1ec01226838729c4c858238c8eb0e70705832dad4d22775b7ee988981

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