Malicious PDF — malware analysis report

Static analysis result for SHA-256 d01a0a3c85fd6341…

MALICIOUS

PDF

46.2 KB Created: 2020-07-30 01:15:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 839679ca71a2741c65b5735449cdfc23 SHA-1: e83b0822cec921a930434bd1c7786599863e7a52 SHA-256: d01a0a3c85fd634104a24a0f8a07e557e697aef6c8e2e5294488443e2f908f0d
194 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates the document is part of a link farm, likely for SEO manipulation or to host multiple malicious links. The document body, though heavily obfuscated, suggests a lure related to 'free printable world map pdf'. No scripts were extracted from this sample.

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.ru/pify?keyword=free+printable+world+map+pdf In PDF document text
    • http://files.cruisencocktails.com/uploads/1/3/2/7/132710627/e22865b29a2df91.pdfIn PDF document text
    • http://files.bellabugphotos.com/uploads/1/3/1/4/131406781/8580f0c48a.pdfIn PDF document text
    • http://files.averageguyreviews.com/uploads/1/3/2/7/132710780/3613293.pdfIn PDF document text
    • http://files.romyservando.com/uploads/1/3/1/4/131453208/walefukuvapurorida.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/1/0430/9463/8749/files/bubivetobenajulesanirujin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19085525902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2921/7958/files/xepini.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3093/6733/files/bugaseja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5306/2046/files/pafavapugirewaminilaxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9522/6523/files/limoxipakazibegirupat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nakawefefaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/sejodulezobobizo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5093/4173/files/52476925742.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/wolusoxubazifawo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51994241049.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/98328207493.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000077d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77D6 4984 bytes
SHA-256: 0e89510695adbcfa0d68cf99615da8cfcaf7256643799f2f001099908c1733b4
font_01_sfnt_off000088b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B1 10204 bytes
SHA-256: f70f4a96c3983d8b53cad792f3d18850ecb227c0a31e4fd5dc767985ced51506