Malicious PDF — malware analysis report

Static analysis result for SHA-256 51e0c84bb21edc05…

MALICIOUS

PDF

41.8 KB Created: 2020-08-01 07:09:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 49a0c4eacb5f2042872fce165c294360 SHA-1: 03db3f7b11f5d21fae1f018ff0a1076cbb42ffbd SHA-256: 51e0c84bb21edc05959a9213a6f1bf85856924505b36fb0321ea7d9cde77f35d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, many hosted on Shopify, designed to create a link farm. One prominent link redirects to `https://ttraff.com/pify?keyword=phpstorm+license+server`, which is a known malicious redirector. This suggests the document is a lure to drive traffic to malicious infrastructure, likely for malware distribution or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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=phpstorm+license+server In PDF document text
    • http://files.thameswardcommunityassociation.com/uploads/1/3/1/6/131637853/garegenikazufar_purotubuxegare_jazixibiw_weligufilo.pdfIn PDF document text
    • http://files.psfcfiji.org/uploads/1/3/1/4/131437283/dutuxopazaf.pdfIn PDF document text
    • http://files.goodfinds1.com/uploads/1/3/1/3/131384407/9168677.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/1/0435/4169/2570/files/xolotepivadifaniro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/xipekerobugoruvovare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0011/0999/files/23061482645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2426/1026/files/8942704131.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9966/1223/files/6701347266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0225/7823/files/62381861407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4893/4295/files/ffxiv_leveling_guide_1-_50.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/kekisakudomu.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5C 5024 bytes
SHA-256: 8754e9942145ad49698f2900c0c574aafb15007859c33ccd3987f992c6f750b9
font_01_sfnt_off00006e4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E4B 1952 bytes
SHA-256: 0cdbcdb77f697d125efbe5bb4805316d67a7ce361b0a24fbb7756eff92436db7
font_02_sfnt_off000077ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77AB 10256 bytes
SHA-256: e6b3bed22b2b74a531a93e509c2e9f1aec9c533a63204c3b09b5a80b602bdfa8

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