Malicious PDF — malware analysis report

Static analysis result for SHA-256 663be9f5f57f5706…

MALICIOUS

PDF

42.0 KB Created: 2020-08-18 16:17:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fa1bcedddee0e68b64e02abb5282daa SHA-1: bb624d6cd0b32edecdc0b659882f5b0078f25610 SHA-256: 663be9f5f57f5706c252e7b2fd21d00b7a363bff6126ab66c63bfff7e5b44a14
194 Risk Score

Malware Insights

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

The PDF contains embedded links that point to a redirector URL, identified as malicious. The document body, though heavily obfuscated, contains text related to 'motor insurance policy pdf' and the URL itself, suggesting a phishing or social engineering lure. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm designed to distribute malicious content or phish for information.

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=motor+insurance+policy+pdf In PDF document text
    • http://files.mrfhistory.com/uploads/1/3/0/7/130776118/9052718.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/1/0431/7777/1162/files/17714781190.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8924/7894/files/aptitude_test_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4783/6065/files/c_resize_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6127/0935/files/sorutakibezeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3320/6682/files/59029174429.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4100/5480/files/xumemesewugujaroruzuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8818/3456/files/46907258209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pawatofamilafal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4736/0414/files/microbiology_sterilization_techniques.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/60025358105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8768/4003/files/56314699340.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9966/0194/files/tilikunazodurovapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/wokure.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_off00006657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6657 5256 bytes
SHA-256: b049eed96d1a0bdebf1beaf76c3b56b168cc524de8d2d3e22e5eabcca06ef9ed
font_01_sfnt_off00007857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7857 10248 bytes
SHA-256: c3d0e87f5524bb11f3b53633641c33c00f7ce547f0cf1102aa1a24494caccda0

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