Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f16203617368394…

MALICIOUS

PDF

43.3 KB Created: 2020-08-10 04:55:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e910e76b57b3b08a06ff304757cf3cad SHA-1: b1617e065c48ba198679ac884689f4ceb9323222 SHA-256: 0f16203617368394b0a1e82921968630531531940b7fe18d5c5f9a9227bbcef4
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains a URL that is also present in the heuristics, indicating a likely attempt to lure users to a malicious site. 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=brussels+city+centre+map+pdf In PDF document text
    • http://files.letsgotravelagents.co.uk/uploads/1/3/1/8/131856626/zigovuj.pdfIn PDF document text
    • http://files.maitlandstreetrodders.com/uploads/1/3/0/7/130740323/9657254.pdfIn PDF document text
    • http://files.calcoastalhorserescue.com/uploads/1/3/1/0/131070861/xetitagoruw.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/1/0432/5313/7576/files/9889363935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0051/8040/files/15574969042.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/wild_magic_chart.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9958/4664/files/munafumojorenivufepi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8056/4392/files/54139538361.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8524/2275/files/zufalifafoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5989/4682/files/97121276083.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6371/2671/files/budagizibadow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5371/1513/files/25634434047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/83001940966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4995/0116/files/zenag.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
🗂 Part of campaign: letsgotravelagents.co.uk 3 samples

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_off00006885.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6885 5452 bytes
SHA-256: 24589f90792e05bb8187b4339a108c65b3e3efff857620a1f16f516b72d3ce5c
font_01_sfnt_off00007b04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B04 10556 bytes
SHA-256: 3a10d12084aa0bfe4b4a855928ae81716bd777f5d459c24face6118ec8f14272

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