Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a21efa171087d41…

MALICIOUS

PDF

45.0 KB Created: 2020-08-13 05:46:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4bc08fbfea014126e419864c468ff0b0 SHA-1: 23eda84dcd92c234052d5022aadf1eb1ed1a58c2 SHA-256: 9a21efa171087d410841f7b66278ee66e901cc164f801d592bd2b2f9b589a955
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, 'https://ttraff.com/wb?keyword=decimator%20g%20string%202%20manual', is identified as a known malicious redirector. This suggests the document is part of a link farm designed to lure users to malicious sites, likely for phishing or malware distribution.

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/wb?keyword=decimator%20g%20string%202%20manual In PDF document text
    • http://files.laurelwoodtroy.com/uploads/1/3/0/9/130969357/xinajutef-zerexakudugagup-fuwavemep.pdfIn PDF document text
    • http://files.stellasbakery.store/uploads/1/3/1/4/131437515/xofugosig_xilevifilupate.pdfIn PDF document text
    • http://files.dcmspto.org/uploads/1/3/0/9/130970009/gileraduz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5799/4138/files/72014461632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9833/9496/files/19372566115.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2584/1819/files/74450620463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6367/0939/files/81643682290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7964/7900/files/banking_awareness_for_sbi_po_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/maxezivizawaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0377/2056/files/69700051.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/gakubegubadameluxiboxuzig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5520/9879/files/86862236570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8131/0114/files/jejefezizakoboj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6983/2357/files/formulation_and_evaluation_of_aerosols.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3236/3676/files/wulopurorenipawem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6229 5132 bytes
SHA-256: dce1ff061c10f281deb81fac95f7fb4260795c75fcb8cc046cb0616efe12295a
font_01_sfnt_off00007385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7385 10520 bytes
SHA-256: 402cf79026a1efef425b4bc1a44e20ba59c95987209d43055782dc2edfa3b7d2
font_02_sfnt_off00009765.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9765 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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