Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1e7605d4f7a4afc…

MALICIOUS

PDF

34.2 KB Created: 2020-08-01 08:45:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb7f7f503a26c4a42e23ff5b53db2e7d SHA-1: a90400e14d47e71075255a4f88015a11819a72d5 SHA-256: b1e7605d4f7a4afcb250c9c4d7975de1223af2bd9419abe8f4586c97a95f6a8b
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, disguised as a Kindle Fire HD 8 manual. The PDF also contains a large number of external links, many hosted on Shopify, suggesting a link farm or SEO manipulation tactic. The ML classifier strongly indicated maliciousness.

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=kindle+fire+hd+8+manual+pdf In PDF document text
    • http://files.thebruinpost.com/uploads/1/3/0/7/130739060/277e2e.pdfIn PDF document text
    • http://files.seeingsouthern.com/uploads/1/3/0/8/130874379/poverofomek.pdfIn PDF document text
    • http://files.rentatent-sw.co.uk/uploads/1/3/1/4/131452817/2363bf.pdfIn PDF document text
    • http://files.alllittlerockstars.com/uploads/1/3/1/0/131070011/wukozisim.pdfIn PDF document text
    • http://files.carlosdepaula.co.uk/uploads/1/3/0/7/130740178/tibetemekap.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/1/0430/3909/6986/files/46342290512.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6017/3717/files/58442171559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/kisuxozezikuwupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/xuwogodokogofumafitorig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5108/2143/files/kuvugebagivunanoluk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7697/5768/files/worudilazuxelinunosidada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/rekufopinin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/zaxerobosefixubijujolami.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/womurok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9481/7445/files/78543623641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/noviwuvado.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_off000047d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47D3 5264 bytes
SHA-256: ce849e48a233e2766714558aac95ae6758a545c7eb6f1506ba9cd444ebeb0a8c
font_01_sfnt_off00005996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5996 9708 bytes
SHA-256: f1eda48bfab3f5f7b20b031bbe60f4a75f0c8a1d9e0d3d8273659e40a59f40dd

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