Malicious PDF — malware analysis report

Static analysis result for SHA-256 1364d53c4db709f8…

MALICIOUS

PDF

38.6 KB Created: 2020-08-26 11:18:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 48a594ce37ae0b694335f45fe2141ad2 SHA-1: 5538a8a3dff245bf4e3ba417520609b781d4d13e SHA-256: 1364d53c4db709f8d2baf7e8b2fbfc7babc1ad4f5f2362b532af4d03386a5cbd
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links, many pointing to a redirector service that is associated with malicious activity. The presence of a link farm and a redirector suggests an attempt to lure users to potentially malicious content, likely for phishing or malware delivery. The ML classifier strongly supports the malicious nature of this file.

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.link/pify?keyword=saxalxo+aftiaqi+impeqsi In PDF document text
    • http://files.nathangentryphoto.com/uploads/1/3/1/3/131381901/e7ab3894a073.pdfIn PDF document text
    • http://files.indesignz.us/uploads/1/3/0/7/130739021/c65e20c.pdfIn PDF document text
    • http://files.gobehopevietnam.com/uploads/1/3/0/8/130874403/f94a2ddfdc3.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/1/0433/6451/6005/files/sikizawuxamelis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2330/8712/files/30346938625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/zodijutefokatexowiwilotav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4078/5062/files/mefefelenopojuvilenip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/polar_coordinates.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0472/3349/files/argument_essay_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9540/0356/files/23677900013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5296/5792/files/52062668351.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1977/9742/files/98870167792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5468/6617/files/47048822665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/27366471632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5213/6608/files/apache_cassandra_jdbc_driver.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7812/3669/files/72745907624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0758/9027/files/posujig.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: charliecalvert.net 6 samples

Related samples 3

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_off00004ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DDB 5248 bytes
SHA-256: 2bf39f484e9b250c85608e933438548fbe9ac2914253bacddb6a3b0811fa3d94
font_01_sfnt_off00005fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAD 2696 bytes
SHA-256: 9da5805538c8b3de6e004d00e2e1c172f1f7e2cc5738bc418d4741dd0003a58e
font_02_sfnt_off00006b74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B74 9932 bytes
SHA-256: eee16c147042e44a0ddc57863357a660be478254bd8c7906b6431ea0df7ce4ae

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