Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6f53cf33200accf…

MALICIOUS

PDF

41.6 KB Created: 2020-08-07 00:23:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 472d59355a307e49cefa2732e7ec152e SHA-1: e09dc17ba4c235e0daa27ead8ec6af2d450a38c0 SHA-256: a6f53cf33200accfd6e8d0a17ac379ea35f39e79211040fbb75856f53cb4f2f9
194 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious infrastructure, likely as part of a phishing or scam campaign. The document body, though heavily obfuscated, contains the target URL and references to 'bullying escolar en argentina pdf', suggesting a lure. The presence of numerous embedded links, many pointing to Shopify domains, indicates a link farm used to distribute malicious content. 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.cc/pify?keyword=bullying+escolar+en+argentina+pdf In PDF document text
    • http://files.danaeirismcqueen.com/uploads/1/3/0/7/130740118/1042219.pdfIn PDF document text
    • http://files.wagster.net/uploads/1/3/2/6/132681342/gejewibiwage.pdfIn PDF document text
    • http://files.communityofcongregations.org/uploads/1/3/1/4/131454560/kitunekarufulumu.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/1/0428/3249/4751/files/pavuniwedinozap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4919/7472/files/smokey_bones_nutrition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8098/2432/files/palezofemilom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5827/3185/files/batumomokolu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9369/5395/files/pujajizutogive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8439/8244/files/72400865949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3301/9047/files/55255642312.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5789/5841/files/25932975789.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/84584983930.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 4

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_off000063f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F4 5476 bytes
SHA-256: c85851afeb8a930dcb4c33944a1369db254556d8e6fa52a51bfbfc7172c0475c
font_01_sfnt_off000076b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B8 10284 bytes
SHA-256: ca83137cba517753c56ab961a278109a5166d380d583a3710fc16cbf00bc3976

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