Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0db2206baa02c0e…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 04:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 771ea3577c2b7d6f403308979a38961d SHA-1: 1aa1e01eada125c2224763b2eef8e2b68d3a2dfd SHA-256: a0db2206baa02c0ea7128f93d7f77b4e59eb70e36b310acad92f70ef39ceeab3
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body itself is heavily obfuscated but contains references to the malicious URL and several benign-looking Shopify URLs. The primary attack pattern appears to be a link farm designed to redirect users to malicious content or for SEO manipulation.

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=a+horse+walks+into+a+bar+pdf In PDF document text
    • http://files.neslle.com/uploads/1/3/1/8/131871864/bogugavoxij_viwimi.pdfIn PDF document text
    • http://files.thinnerstrongerhappier.com/uploads/1/3/0/7/130738971/60ddc79.pdfIn PDF document text
    • http://files.alinasab.ca/uploads/1/3/0/7/130739376/2066002.pdfIn PDF document text
    • http://jugasetok.broadhorizonsenglish.org/uploads/1/3/1/4/131482803/c32c592f24fe72.pdfIn PDF document text
    • http://dujafata.guqintables.com/uploads/1/3/0/8/130874565/viguwok_wavisup.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/1/0431/1390/6333/files/biology_mcq_pdf_in_bengali.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/online_converter_to_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0682/7429/files/zejan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6676/1120/files/84070703884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9899/5877/files/51959998665.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2418/7549/files/15096462632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7813/0593/files/zixezivonuvilajibakuxi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/fuwizilametuvuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/airway_management_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/88605295104.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_off00006515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6515 5412 bytes
SHA-256: a363ec87b7514ee6e6d8e1e1718ea8dd88ae122a089880269550009437be4d95
font_01_sfnt_off00007782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 11192 bytes
SHA-256: 621dad3c639d952bb6cd9358987b6ce203278112aac9212f583b80977fb47c9e

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