Malicious PDF — malware analysis report

Static analysis result for SHA-256 c95f982e0b9d27c0…

MALICIOUS

PDF

49.5 KB Created: 2020-08-25 01:47:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ac78b18443090cb3588559c1092fec0b SHA-1: c4a273b396431c20442e70a5659563a2db448ac4 SHA-256: c95f982e0b9d27c02560d9cbe7491ff25513fcc645b2866e0c851e2a9d482878
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a URL associated with malicious redirector infrastructure, specifically designed to lure users with promises of useful apps. The document body, though heavily obfuscated, contains text related to 'internet booster app' and the malicious URL, reinforcing the phishing or malware download lure. The ML classifier strongly indicated maliciousness, and the presence of numerous external links suggests a link farm designed for SEO manipulation to attract victims.

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=best+internet+booster+app+for+android+phone In PDF document text
    • http://files.mimicross.com/uploads/1/3/2/6/132682630/2820353.pdfIn PDF document text
    • http://files.regalimagegermanshepherds.com/uploads/1/3/0/7/130775490/f8df9.pdfIn PDF document text
    • http://zamematir.tintawitaelderliving.com/uploads/1/3/0/8/130874038/8938673.pdfIn PDF document text
    • http://files.whiskingoutsidethebox.com/uploads/1/3/0/9/130969427/c7cd350.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/1/0432/5238/3904/files/57231355925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4186/5384/files/48873193101.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4252/0739/files/sarifod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/9691/6374/files/81460172387.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4149/6981/files/the_startup_owner_s_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3456/5025/files/nuzamuvutameguso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/6997/files/47914025210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1742/1479/files/65748634029.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/93679726000.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zilifevuzumojewod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/6812/1237/files/google_sheets_send_email_on_edit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9994/7162/files/ycmou_admission_form.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_off000083fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83FA 5288 bytes
SHA-256: 0c5082ac097a57fdf9aa734f286f05f8971dd03ea52d33b7cc67f7072de7bf9d
font_01_sfnt_off000095df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95DF 10204 bytes
SHA-256: 3f76e37208ddbc811cecafb72e30c18ed3aca1f8cc0233967547c392ab326293

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