Malicious PDF — malware analysis report

Static analysis result for SHA-256 7acc861a973b2840…

MALICIOUS

PDF

47.0 KB Created: 2020-08-11 04:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2b010a8856393688b85a55947d5bdad5 SHA-1: e04b7dbfff0a53eb1442f55c1f565eee14d15579 SHA-256: 7acc861a973b2840c207bdfdce56e3bac402facde5782207099c34ef945c79f7
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirects to a known malicious redirector, indicating a phishing or scam attempt. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found in the heuristics. 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.ru/pify?keyword=que+es+eclampsia+pdf In PDF document text
    • http://jepexune.goldenhoursc.com/uploads/1/3/0/9/130968996/rasepugopamudi-rigulexovumav-tujeduwejo.pdfIn PDF document text
    • http://kozexo.modernsteps.net/uploads/1/3/1/6/131607029/9193044.pdfIn PDF document text
    • http://files.lilysparkles.co.uk/uploads/1/3/1/3/131380213/7cca1355f7959a.pdfIn PDF document text
    • http://files.fitkitchenph.com/uploads/1/3/1/6/131606343/wobejutaw-bovinixavuj-mogigo-nizevo.pdfIn PDF document text
    • http://files.innerheartpathways.com/uploads/1/3/2/6/132681002/46e9335.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/1/0436/1207/8243/files/80877017645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9607/0549/files/catalytic_cracking_process.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1161/2572/files/como_aprender_ingles_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7264/2460/files/anemia_drepanocitica_pediatria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/sogowefamekifobujud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5631/7091/files/58796117343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/varanomavumozomadeda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kosetomamevisired.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1624/7703/files/waxenawimudodoforemata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7858/2439/files/72245663013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3680/3233/files/farapun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1245/4560/files/tusajapegiduzimokilare.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_off0000787d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x787D 5268 bytes
SHA-256: 76c4dc4a40701bbfed73545a8900b56104e8641fea8a149cb618d1bff0ddfdeb
font_01_sfnt_off00008a5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A5A 11448 bytes
SHA-256: 7dc6e20bf7c791b8369a96a3d332d9c5e61fa91c810645358f2d020f78caaf7d

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