Malicious PDF — malware analysis report

Static analysis result for SHA-256 8733a1c43915c284…

MALICIOUS

PDF

39.3 KB Created: 2020-07-26 20:55:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6cc3b50ea995a486e43c60018e1e253f SHA-1: ffaf10e648893694f545c8af328d20f0b4448e58 SHA-256: 8733a1c43915c28412cab6fd8c32a7df1c42b3a1733afdced2f31920458ead7e
194 Risk Score

Malware Insights

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

The PDF contains multiple links to redirector services, including one identified as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'Millipore stirred cell manual'. The presence of numerous links, many pointing to Shopify domains hosting PDFs, indicates an attempt to create a link farm for SEO manipulation, likely to distribute malicious content or phish for credentials. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=millipore+stirred+cell+manual In PDF document text
    • http://files.heffernanfoodconsultant.com/uploads/1/3/1/4/131438329/xupoved-rinojotegun.pdfIn PDF document text
    • http://files.rosalindstefanac.com/uploads/1/3/2/3/132302802/xawavo-wupopopowipik-vomaguxasan.pdfIn PDF document text
    • http://files.mmtimage.com/uploads/1/3/1/3/131379540/tonazi_bagudisegelopu.pdfIn PDF document text
    • http://files.hbkirkpublishing.com/uploads/1/3/2/6/132682758/risiraxuzemo.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/1/0431/6086/2874/files/47440073274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9726/8128/files/dibabitewojatakot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/nexiwadoxonigadodekuvifi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/77293540169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3369/8209/files/lijeduka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2491/6388/files/mubiwaberopuseridapisop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1428/1625/files/taxorixezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4930/4742/files/vireb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9562/1781/files/64210859576.pdfIn PDF document text
    • https://doi.org/10In 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 4

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_off00005b9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9E 5104 bytes
SHA-256: 09fbd6ecf102970b594bb18e371ffb683555876cc4a3ff2759f5db69e7e2b44c
font_01_sfnt_off00006cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CD4 10384 bytes
SHA-256: b3087702a0043a515531f41c4d9a812623e08b54c86f5578bb60fcd0ad25d4cd

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