Malicious PDF — malware analysis report

Static analysis result for SHA-256 70b0a47aacf275ae…

MALICIOUS

PDF

40.8 KB Created: 2020-08-07 23:27:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b33d5824aa126c44d2b78360af17e333 SHA-1: 61dac5480f37f6136875f061fd3cc5a858642338 SHA-256: 70b0a47aacf275ae11f02efad92a8e642374cacd6aa4787cc353fb07f822165f
202 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service. The presence of a 'download button' lure and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document body, though heavily obfuscated, contains the primary redirector URL.

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.cc/pify?keyword=sepse+neonatal+sbp+pdf In PDF document text
    • http://files.friendshipministries.com/uploads/1/3/0/7/130738614/nilesapukufuj.pdfIn PDF document text
    • http://files.carolinagreenindustrynetwork.com/uploads/1/3/1/6/131606487/1731aa872b4ad.pdfIn PDF document text
    • http://files.irieiwaforstudentsinc.org/uploads/1/3/1/3/131397946/3297795.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/1/0430/0773/8019/files/sekiro_ashina_sake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1871/5289/files/degib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5150/7094/files/13762928072.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1701/7256/files/lewikekotibokuvelekos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/12836025522.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1608/5923/files/91895205513.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2919/8998/files/angela_merkel_biography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6341/9815/files/77370042063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6404/1373/files/completely_uninstall_mysql_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3272/1046/files/important_biology_questions_for_ssc_cgl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/66531530771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8416/9894/files/viwivurakevo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53940391871.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7974/6201/files/callan_method_book_4.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_off000061a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A5 5180 bytes
SHA-256: 90791c37ce8910e5ccdb0d7701c7545dc56c859694e265ccfafe65451f27d765
font_01_sfnt_off00007350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7350 10340 bytes
SHA-256: 14279349663b2248b76d8d93ccce7bcc68ed95a63cd6c220416a6f24a6cb7be2

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