Malicious PDF — malware analysis report

Static analysis result for SHA-256 b95cb65c8254e54a…

MALICIOUS

PDF

45.0 KB Created: 2020-08-13 00:25:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 95a7367f9c884dcb590fd0c58c509094 SHA-1: 72fdfb3846c5d35633f62554e9bf02063a6812ba SHA-256: b95cb65c8254e54a14c0b5766a3e5890e9e7b3bc8f5a32caa714e4703e915ad2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link farm designed to appear as legitimate documents, but the primary link redirects to a malicious domain. The document body itself is heavily obfuscated but contains the malicious URL. This indicates a phishing or redirection attack aiming to lead the user to malicious content.

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=prentice+hall+biology+book+online+pdf In PDF document text
    • http://mutivav.bengonzalez.com/uploads/1/3/1/0/131070382/5261058.pdfIn PDF document text
    • http://viwim.608art.com/uploads/1/3/1/1/131164250/gadilefoka_demapugu_semapuf.pdfIn PDF document text
    • http://womagozen.getoutgetsouth.co.za/uploads/1/3/2/8/132816066/kigujixovaxela.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/1/0433/0582/8520/files/38465113593.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2974/9145/files/skyrim_legendary_edition_strategy_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/gugofawigitowuwosipew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7730/4481/files/developmental_biology_11th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8860/1503/files/46146627520.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7570/6788/files/bpi_savings_account_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6041/8970/files/41674730026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2806/7990/files/aha_low_cholesterol_diet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5339/1765/files/36388368879.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1390/6327/files/xusifuxamiveweboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2991/4012/files/rbse_class_11_biology_book_download.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 1

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_off000072a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A5 5548 bytes
SHA-256: 99c8791f6f5a2c53409ed5e1496d7a69edbc7d62340fa55e7f5037e4dd04ed9a
font_01_sfnt_off0000856f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856F 9792 bytes
SHA-256: 7b300db0f0e08495c5f8351d40ef6b80ab386ed4a2062327efa8c4e59d413ab2

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