Malicious PDF — malware analysis report

Static analysis result for SHA-256 08147c8581160e82…

MALICIOUS

PDF

34.8 KB Created: 2020-08-15 10:11:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63a44afc83b17ea0149bc7b4ad425620 SHA-1: 83f78a56019e9823058f851dc415a36817089093 SHA-256: 08147c8581160e821ff8faabc326ef42edcc38ffad4c2cfe556964048d7bed1d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a malicious domain, masquerading as a service manual to trick users into clicking. The ML classifier strongly indicates maliciousness, and the presence of numerous SEO-linked PDFs suggests a link farm designed for phishing or malware distribution. No scripts were extracted, but the redirection mechanism is clear.

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.ru/wb?keyword=sysmex%20xn%201000%20service%20manual In PDF document text
    • http://files.southamboyparade.com/uploads/1/3/0/8/130814076/33c944dbb3b487.pdfIn PDF document text
    • http://pobumeb.imperiumduelist.com/uploads/1/3/1/3/131398097/c666a4e.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/1/0438/8870/5688/files/biliwanozufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7437/8138/files/50076257029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5904/3749/files/99570088105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0688/5031/files/lexazatiju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/21282647638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/welcome_to_my_mine_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9932/4577/files/tabla_alimentos_proteinas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8657/7818/files/20012715365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7105/9608/files/eclampsia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/7066453959.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8855/2870/files/masirutum.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6913/6280/files/bujemofe.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 2

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_off000047b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47B3 5472 bytes
SHA-256: add105810049298c96f1ad1d79fb00b1700f77994f41cd8e95a3dd69802a77c0
font_01_sfnt_off00005a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A3B 10664 bytes
SHA-256: 487aa591415899d3c31581464ab0d3bda1bf381226c18c537802ae994ac170d0

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