Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2318bab1e19fc3d…

MALICIOUS

PDF

57.7 KB Created: 2020-08-07 21:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 724266068fd5228bcd73cb602dfe31d8 SHA-1: bd4595fc4137c50185d366822e5957f6e5b36ac9 SHA-256: a2318bab1e19fc3d4d2684538691e21a83b50e9a4018e657579d42affb5d8536
194 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to a URL designed to lure users with a fake download prompt. The document body also contains the same URL, reinforcing the social engineering attempt. The presence of a PDF link farm further suggests an attempt to distribute malicious content.

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=history+of+great+britain+pdf+download In PDF document text
    • http://vulusi.thecarissafoundation.org/uploads/1/3/0/7/130739227/vidavojebeman.pdfIn PDF document text
    • http://files.hocosoccer.com/uploads/1/3/1/4/131437689/gutewevajudororipep.pdfIn PDF document text
    • http://files.campyellowdog.ca/uploads/1/3/0/8/130874585/biduse.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/1/0430/8231/7975/files/90416881798.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/bixir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1485/6610/files/34797339176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2885/6487/files/alphabet_worksheet_esl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/952339627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/78302531724.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5723/3576/files/gazogoduzojawezero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1188/2653/files/38229021978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0637/7632/files/kuwakixenokagukit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6701/5329/files/ppmt_function_excel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3953/8851/files/gevajexogiwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7044/0095/files/35292006609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8592/2466/files/nelawisubaxegepero.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_off0000a3e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3E5 5504 bytes
SHA-256: 0fcdc109f393bd6a4001e55f048fe6d6bf6ddabc61d7d7d5b9296cb4f17ce6ef
font_01_sfnt_off0000b6c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C0 10144 bytes
SHA-256: dae84bba0f3d3f0fa79f2057e7a1a8b3f864c69dc06d8fe41f8b46716a4a954d

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