Malicious PDF — malware analysis report

Static analysis result for SHA-256 7997764e0fc22a2b…

MALICIOUS

PDF

45.5 KB Created: 2020-08-22 17:50:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15f57b261bb1bc9188e99943527d958a SHA-1: 8aaa0739bd57d61f9cd4741f8bb2366e10df3ce7 SHA-256: 7997764e0fc22a2bb4e8deae156fcdb38cbd9c1755b7173cede881262b982851
202 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, suggesting a phishing or scam attempt. The embedded document body text, though heavily obfuscated, contains a URL that points to a known malicious redirector. This redirector likely leads to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=date+sheet+gndu+ba+1st+sem In PDF document text
    • http://files.greatcowbasic.com/uploads/1/3/1/8/131856907/bugobadewuderasebado.pdfIn PDF document text
    • http://mekovijed.confidentlyuare.org/uploads/1/3/1/8/131871462/7059024.pdfIn PDF document text
    • http://files.doubleimagetheaterlab.com/uploads/1/3/2/6/132681617/67b562ad87.pdfIn PDF document text
    • http://files.cflhfes.com/uploads/1/3/1/4/131407469/kibaxutup-xonaxawa-xurez.pdfIn PDF document text
    • http://files.monroecounty2020.com/uploads/1/3/0/8/130873708/7560252.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/1/0433/4705/0661/files/controls_and_variables_spongebob_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7304/4634/files/zogidofugifawurobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7361/7576/files/18378426603.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/53340893807.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/katuletemi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6095/2229/files/72709135349.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9318/1087/files/reading_comprehension_past_simple_regular_verbs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4580/6503/files/.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4356/1373/files/colspan_autotable_jspdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1835/3821/files/gipugetumanaja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/1743/3251/files/meek_mills_traumatized_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/31409890128.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 8

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_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 5304 bytes
SHA-256: 8836dbdcd0a1409fc2bb48147863b150f050908025286b9153fe5556a35a3e6a
font_01_sfnt_off000084ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AE 11012 bytes
SHA-256: d3fc7801dfaced349b1e24d5104649b1c008ff1a84506a3a55b03e14f53cfa89

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