Malicious PDF — malware analysis report

Static analysis result for SHA-256 59e02cea78bb3d27…

MALICIOUS

PDF

37.9 KB Created: 2020-07-29 21:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 6f7899fd1a92ba9226983e4099aa5b11 SHA-1: a2153f915ad2b7770aee93e83c93590b295bfafe SHA-256: 59e02cea78bb3d27337ccce9ddf37e3ea9f1caec1523739e4c792be22c3f6cef
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to known malicious redirector infrastructure. The primary malicious URL identified is 'https://ttraff.com/wb?keyword=legislative%20branch%20worksheet%203', which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains text related to a 'legislative branch worksheet', suggesting a lure to trick users into clicking the malicious links.

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/wb?keyword=legislative%20branch%20worksheet%203 In PDF document text
    • http://files.inkspiraldesign.co.uk/uploads/1/3/1/6/131607703/jazetiwulejetajox.pdfIn PDF document text
    • http://files.angelicrodgers.com/uploads/1/3/1/6/131637104/nekubeniwibur_rofiwopip.pdfIn PDF document text
    • http://files.woolacombesurflifesavingclub.org/uploads/1/3/0/8/130813762/fuganap.pdfIn PDF document text
    • http://files.csi1000.us/uploads/1/3/2/3/132303081/dfff4c9359.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/1/0428/9835/8432/files/93527538138.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0866/3456/files/tugekop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5697/2455/files/duwiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6717/9165/files/gamakufodasapevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1910/7480/files/90807933939.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6728/5410/files/darufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8063/8879/files/617730223.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8981/3909/files/11850503498.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/69742091831.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1506/1153/files/23118944815.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2499/0887/files/98075763965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/rinuru.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 3

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_off000057a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A5 5312 bytes
SHA-256: 9f4580262388bfce75db3b2e8021723a3b109370d12c62e81acf393a636b67de
font_01_sfnt_off000069bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BF 9548 bytes
SHA-256: ed9cb6557671a881c402fa947265614806c61622f732463617c6c0dab463ceb6

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