Malicious PDF — malware analysis report

Static analysis result for SHA-256 454386df8bb78eda…

MALICIOUS

PDF

39.2 KB Created: 2020-08-20 04:33:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 37bd7fa6329a71a6a2c5defdc1568ba9 SHA-1: 153dcbde9ec4b3c6d8833a3ac5ef5553fae12a15 SHA-256: 454386df8bb78eda9ec9a45ef91d28ee7003fbe0b555ccbc9afa7e8ceab07ec7
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 Shopify domains hosting other PDFs, but one critical link directs to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves a link farm designed to obscure the malicious redirector.

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=avatar+java+jar+game In PDF document text
    • http://xurobe.leapaheadcenter.com/uploads/1/3/0/7/130775606/nukiriwili.pdfIn PDF document text
    • http://files.saintcatherineorthodoxchurch.org/uploads/1/3/1/4/131452735/5a18fb010efa64.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/1/0433/7106/9594/files/34529451882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0750/0711/files/mp_adivasi_song_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6499/9588/files/intro_to_psychology_kalat_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4391/2856/files/xiruzigijugowefusedim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1003/0748/files/online_marketing_articles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3410/8323/files/regions_departements_et_arrondissements_du_cameroun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3462/4668/files/fimiludamopidu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6811/2550/files/tibopedis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7433/8454/files/divasoziwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0378/8959/files/lucky_britney_spears_lyrics.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 3

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_off00005b12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B12 4920 bytes
SHA-256: 75b5f990e9c2ed3bef88acc347fab84cbab92d11797df5b335faaafc77f093cd
font_01_sfnt_off00006bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC8 10380 bytes
SHA-256: 49ad0ecbc47fc89bd014813c4b88815f086d6e12e317ad15be72a232bf8aef23

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