Malicious PDF — malware analysis report

Static analysis result for SHA-256 8174f420aa5374b7…

MALICIOUS

PDF

45.5 KB Created: 2020-08-22 00:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aee837869a187f2b804d06f75e1446a3 SHA-1: 42ec24136f1a94d72875047a40175e74be2cc449 SHA-256: 8174f420aa5374b79bafe42a59538cbe918ef2eb6a41a929b5e15613000b273c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links, many pointing to a redirector infrastructure designed to obscure the final destination and potentially deliver malware. The heuristic firings indicate a malicious redirector link and a link farm, suggesting an attempt to lure users to malicious content under the guise of providing information on Malaysian HS codes and SST. 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.cc/pify?keyword=hs+code+malaysia+pdf+2018+sst In PDF document text
    • http://files.brokeninkprinting.com/uploads/1/3/1/6/131607029/mirifogi.pdfIn PDF document text
    • http://ziwema.filmstillphotography.com/uploads/1/3/1/6/131636648/6392254a1bcb1bc.pdfIn PDF document text
    • http://nunovuxo.thelashlife.ca/uploads/1/3/0/7/130776407/xejaxajemudoj-bazidi-xutel-miniji.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/1/0429/3863/0300/files/75178070573.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1409/3986/files/docker_modify_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/oxford_dictionary_download_free_full_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/ketefasatesemisubulejeno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4018/4232/files/english_alphabet_images.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1227/5870/files/dojubaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/97360953397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/celtx_storyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3420/6620/files/gijadadixaxumidemefijulud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6897/2444/files/87381542437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8181/0595/files/161080019.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 1

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_off0000651b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651B 5788 bytes
SHA-256: dc6d198c4f5fdd72809627d54367b193d1f11418e786f83dfe6faccfceac8c4f
font_01_sfnt_off000078ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78CE 15636 bytes
SHA-256: 2bcecd3691957a8690e2d9789479eeca61f5cc183e02fbaa05e3bd9d8e151e32

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