Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c53dd1a13ba88e5…

MALICIOUS

PDF

43.3 KB Created: 2020-08-06 02:31:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f339706d0c86ca446405c98e59fc042 SHA-1: 7ea718fe35ec2b186357ad77ffe86821fca92c17 SHA-256: 9c53dd1a13ba88e5d6e7aa18c3bcaae9289f6b88d88cbe91af843af9a647f3cf
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a large number of embedded links, many of which point to external websites, including a known malicious redirector. The document body, though partially corrupted, suggests a lure related to academic content ('isomerism in transition metal complexes pdf'). The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a phishing or redirection attempt. No scripts were extracted from this sample.

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=isomerism+in+transition+metal+complexes+pdf In PDF document text
    • http://paforen.revmeganlloydjoiner.org/uploads/1/3/1/4/131438405/805365.pdfIn PDF document text
    • http://kitex.msgoodwin.com/uploads/1/3/1/8/131872225/475139.pdfIn PDF document text
    • http://files.nachomamanc.com/uploads/1/3/1/3/131382092/4d0253.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/1/0433/0687/7080/files/94192334972.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0921/1549/files/jujeputawogugokagike.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1285/6731/files/vejapizosisexokaruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5725/8402/files/14012433579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9803/8679/files/rirovofodolevezovezozija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2866/7816/files/32395433177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2703/8359/files/bupixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8065/5775/files/81367863757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5919/9650/files/8049380298.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8520/1561/files/37467638560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7808/0925/files/dmv_practice_test_nj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1532/3291/files/warorenajazofupexa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/99424231211.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_off00006a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A4D 5308 bytes
SHA-256: 17fb6e9a7f2ed1fed0bdc271c8e582a2499604904b19d95c79b387a5567fed24
font_01_sfnt_off00007c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C43 10604 bytes
SHA-256: 4bda481e551f5b7f1f06d1ebfe6bec5b7010116aab472069e0c30a13a5e79870

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