Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f35e2f42738ec34…

MALICIOUS

PDF

35.7 KB Created: 2020-08-07 19:00:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4242adf6f5f92c8f87e03929b8fc6332 SHA-1: 722dd707e461ff0cc014d98ee98a9da69a4934d9 SHA-256: 9f35e2f42738ec3464083023febecf302101ce5d1893c84f4436d2f14b4417c7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm. One critical heuristic identified a link to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=cambridge+primary+science+curriculum+pdf'. This suggests the document is designed to redirect users to malicious sites under the guise of providing a curriculum PDF. No scripts were extracted from this sample.

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=cambridge+primary+science+curriculum+pdf In PDF document text
    • http://files.stmarymagdalenewpg.org/uploads/1/3/1/8/131856531/badifa.pdfIn PDF document text
    • http://files.msimone.com/uploads/1/3/1/0/131070212/3565284.pdfIn PDF document text
    • http://files.dogsworldwalking.com/uploads/1/3/2/7/132712266/gexukejenomunokuzo.pdfIn PDF document text
    • http://files.achievemediation.com/uploads/1/3/2/3/132302941/lifad_romoga_xalozaz.pdfIn PDF document text
    • http://files.thelocalsignman.com/uploads/1/3/0/7/130776895/44485.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/1/0438/3434/3574/files/12036923697.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8180/1629/files/riworuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5955/2155/files/login_to_my_adp.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4948/3426/files/77795408943.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8716/7645/files/amigo_brothers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/benivat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/80092681316.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7195/3301/files/puwugiveze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/7993/1806/files/mystery_skulls_forever.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7035/5611/files/colloquial_english_gareth_king.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9938/2170/files/pilavesogomovu.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_off00004bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4BF4 5620 bytes
SHA-256: 808568bf0fbe9a23decdac7cf0f7e8683b621176b81ca9d0a5a6b94496e16c21
font_01_sfnt_off00005efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EFC 10480 bytes
SHA-256: f922e4355809a622de35df5a1c940f76b6cbcb983b3a9021dc30f7aa49d2b503

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