Malicious PDF — malware analysis report

Static analysis result for SHA-256 30278a36c617db99…

MALICIOUS

PDF

45.8 KB Created: 2020-08-22 22:38:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2d5957ce8708cb7bb55b6e93fdb830ba SHA-1: 4526c62ce679d9f5ee913074788e7a232f4fd712 SHA-256: 30278a36c617db99b2ff225177d9579cd796e4e736ceb7d1b1e0e1992bc8e1bd
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which points to a known malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure related to 'Android version 9 for note 8'. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning attempt to drive traffic to the malicious redirector. The ML classifier strongly flagged this PDF as malicious.

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=android+version+9+for+note+8 In PDF document text
    • http://files.allison-kiefnerburmeister.com/uploads/1/3/0/7/130738792/6412098.pdfIn PDF document text
    • http://files.kwik-fix.co.uk/uploads/1/3/1/6/131637889/8397394.pdfIn PDF document text
    • http://files.coflats.net/uploads/1/3/0/9/130969474/3588177.pdfIn PDF document text
    • http://dejeg.graphicatech.com/uploads/1/3/1/8/131856584/5914480.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/1/0437/0032/2458/files/41408301652.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8805/5191/files/34544301735.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3452/5347/files/22821699105.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0041/3856/files/bedojapoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7058/7029/files/82615936782.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1495/4908/files/16135833358.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8714/8694/files/guided_meditation_for_healing_pain.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9415/5170/files/firexuludak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0951/5425/files/37030017704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7185/6026/files/tuvezetuzolibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7077/5706/files/5051225525.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 7

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_off000074d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D8 5056 bytes
SHA-256: 7ae3b67dde97fcafc9e3ab9112c3416b467d4860baf1006f71d7247c7fc7d3a9
font_01_sfnt_off0000861c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861C 10560 bytes
SHA-256: de8e11eef43402a58e26bd508a7035d8e89a505bdb85d89ba8411d5d0a172fb3

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