Malicious PDF — malware analysis report

Static analysis result for SHA-256 379b999993c51543…

MALICIOUS

PDF

41.5 KB Created: 2020-08-12 05:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 93bb75299e5a0d2e27c9b008341df7ad SHA-1: 1705c156e2eeef7bd6148d5c3a1ac6ba2fbf7a9e SHA-256: 379b999993c51543434d00e7fdf65e02c440907ebd6160c65b4314209c24e223
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bridal chorus pdf free download' and a URL that matches the malicious redirector. This suggests a social engineering tactic to trick users into downloading potentially malicious content or visiting harmful websites.

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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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=bridal+chorus+pdf+free+download In PDF document text
    • http://files.watertownctrecreation.com/uploads/1/3/1/4/131407315/tuxujusirini-jafimav-weninebozasokum.pdfIn PDF document text
    • http://files.greenlightliteraryrescueservice.com/uploads/1/3/0/8/130813694/74c733c34c934fd.pdfIn PDF document text
    • http://files.kidwilliamrecords.com/uploads/1/3/1/4/131411199/7801151.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/1/0437/3259/8938/files/cognitive_bias_codex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/novatezexabowipip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/binoluso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3015/1330/files/vilamodex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5381/7749/files/bubuxaduzolenapesopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6454/0827/files/41465699781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7509/9041/files/widelowoserel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0764/6630/files/fuviruxedufikubil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7135/4533/files/xubunalavavelubipileja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6553/1806/files/joror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/5589/3928/files/coreldraw_x5_tutorial.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
🗂 Part of campaign: chrisjsilvaportfolio.com 3 samples

Related samples 4

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_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 5384 bytes
SHA-256: 0eda09cd99b75a1f2e243cfc23ea194f1048f91a87a975ca9e36e9d3057e2013
font_01_sfnt_off00007568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7568 10904 bytes
SHA-256: 8472db4345b12835320fd7b4e90d1b20a81d31933d90d40a430ade4e9817cfb2

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