Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5e0e9e2e760c53…

MALICIOUS

PDF

43.2 KB Created: 2020-08-14 15:18:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 75b33ac636cffd00934661e803f9233c SHA-1: bcae21434aa4ff68912e7570f37ca5eec0caa097 SHA-256: 7d5e0e9e2e760c538b0f4db71ac10e455ab3418ee6793156f4353de0895e5f24
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, including one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a phishing lure, suggesting an attempt to trick users into downloading further malicious content. The ML classifier also strongly indicated maliciousness.

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=alcatel+pixi+4+user+manual+uk In PDF document text
    • http://files.verateschow.ca/uploads/1/3/0/8/130814644/37db46cc6832.pdfIn PDF document text
    • http://files.spo-celje.si/uploads/1/3/1/3/131398461/1029748.pdfIn PDF document text
    • http://files.lynncociani.com/uploads/1/3/1/0/131069781/6987b401f89f22f.pdfIn PDF document text
    • http://files.middletontheatre.org/uploads/1/3/2/8/132814272/9980048.pdfIn PDF document text
    • http://vusol.caricaturesbysimon.com/uploads/1/3/1/4/131453284/eaae9.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/1/0431/6263/2346/files/69448489405.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1084/0981/files/80898735213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/89428963330.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6446/7357/files/binenuwi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0454/3338/9214/files/13635890188.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3551/5290/files/99714155133.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6842/2309/files/android_9_pie_update_pixel_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/33178277088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1184/0927/files/goweseterudupivu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0069/1866/files/simple_electronic_projects_with_circuit_diagram.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9390/0958/files/bachianas_brasileiras_5.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2299/1007/files/zobigojuwojepefit.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5602 3724 bytes
SHA-256: ce22c8eaa1f53a77d563481fc3f0abc202627ce0e69ac912df19b60822d178aa
font_01_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 5288 bytes
SHA-256: ba1314034c3dd887defc27da52a05dfb3c8755b2fa88a5bb9807bff85e7b638e
font_02_sfnt_off00007527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7527 13332 bytes
SHA-256: 3fc3ca50a7c1f56d5c77d5ee70c4d38dea9eb4f65bfda7aa9323805c92cb334e