Malicious PDF — malware analysis report

Static analysis result for SHA-256 1501644284e9b1b7…

MALICIOUS

PDF

47.4 KB Created: 2020-07-30 15:27:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ad1826dd32a6b25337433c513420ff0c SHA-1: 21b2ccafa2bd3b4a7b0daef3cee4f4afc9216f85 SHA-256: 1501644284e9b1b73d9cf6b141c277f28a9e5c0a7f0b5036750ce3aa20994c21
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically designed to lure users with keywords like 'free download'. The ML classifier strongly indicates maliciousness. The document body, though heavily obfuscated, appears to be a lure for downloading PDF content, likely to distribute further malware.

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=best+urdu+islamic+books+free+download+pdf In PDF document text
    • http://files.magisterseniusu.com/uploads/1/3/1/8/131858287/9681e.pdfIn PDF document text
    • http://files.howwecomeapart.com/uploads/1/3/0/9/130969656/kesezomeru_gowipepix.pdfIn PDF document text
    • http://files.fiveoaksbeef.com/uploads/1/3/1/8/131871740/dalidug.pdfIn PDF document text
    • http://files.carolynspearromance.com/uploads/1/3/1/8/131856991/gadokapupe.pdfIn PDF document text
    • http://files.makelifehd.org/uploads/1/3/1/6/131636907/9193939.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/1/0437/3191/0821/files/19211119130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5275/files/4704456879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/1880746571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7424/8101/files/54427673385.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/vefifitumikovav.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9064/1047/files/wejud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6935/7728/files/54158013120.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/46860860772.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2417/7557/files/dubofudajizagizigusipipef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8145/0151/files/88857820630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9354/files/79561691992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8867/4967/files/68419209892.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000912e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x912E 19180 bytes
SHA-256: 89081ba74203fd04d09dbee9ce7385f628966bbf0cc17b16fbaac36a2a2775a4
font_00_sfnt_off00005b73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B73 5528 bytes
SHA-256: 2dad1f39b4ea80a4ef242adf836b4762dc90b892785812b30ff5b570661c0579
font_01_sfnt_off00006e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2B 10324 bytes
SHA-256: d367db1774ec87fa609019df83aaa85de45bdba0678b298f5284fc78e6cf5863

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