Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5750ea2c8413e0d…

MALICIOUS

PDF

43.1 KB Created: 2020-08-20 20:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c8039bb59193cd88f8895bdf66fac212 SHA-1: 95e5c953684107368523ab38df6561e6d914d903 SHA-256: b5750ea2c8413e0db8273c53bf853dc47c2f2bebdf2fcf6ae83d62bf89f2f6f2
194 Risk Score

Malware Insights

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

The PDF was flagged as malicious by an ML classifier and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL that triggered this finding. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning 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.com/pify?keyword=weather+report+leeds+met+office In PDF document text
    • http://files.amazinggrasslawncare.net/uploads/1/3/2/6/132696512/122853.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/1/0432/9648/9632/files/47974027976.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4259/3189/files/damojanetutuxewivominaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3108/4701/files/fevevakudisofekuvumak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4244/8295/files/94101008287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5865/8456/files/business_strategy_presentation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4375/0049/files/xevorokukoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9869/4042/files/gakefozizaxafumupej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1379/0106/files/sample_xml_file.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/temagedipefutuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3606/5438/files/5069824994.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1829/7245/files/76895423356.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/new_system_implementation_plan_template.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E06 5408 bytes
SHA-256: e901cee28a0155f37f77c022638c269a91f68eeaac4fb47de828cea8885a6e76
font_01_sfnt_off0000704b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x704B 2504 bytes
SHA-256: bda46a189ab5ca82e9a2dfbdd44eacc5857f8d08cd207523bdafa5b6a969d3e3
font_02_sfnt_off00007b2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B2E 10608 bytes
SHA-256: 284cea2c42c705dee057a49ff8cf2a3b64fefbf705adfa1b73a4906cb5c1e1d6

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