Malicious PDF — malware analysis report

Static analysis result for SHA-256 386a73bb294e5c7c…

MALICIOUS

PDF

38.0 KB Created: 2020-08-23 18:18:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 66585fdbffd996db084179a85f624ab6 SHA-1: 8d2d1ea12c926fcf843b884560fff545008d7328 SHA-256: 386a73bb294e5c7cd8d05ea2f4c8963830af960a230b79a9cc719aa45cd1ce88
194 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.ru/pify?keyword=head+lice+fact+sheet+in+spanish, which is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of numerous Shopify-hosted PDF links, while many are benign, contributes to a link farm tactic.

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=head+lice+fact+sheet+in+spanish In PDF document text
    • http://files.emorylanedesigns.com/uploads/1/3/1/6/131606060/fe78210dad9c7.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/1/0446/6167/0051/files/ap_state_reorganisation_act_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4231/files/49443971347.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1720/6949/files/38724803230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7367/files/attendance_sheet_in_excel_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9167/9648/files/linux_convert_to_jpg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0884/2152/files/bokowoxawakowofunija.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7369/0017/files/makalah_sumber_ajaran_agama_islam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/calories_in_lasagna_pasta_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1935/files/koreader_kobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/sir_arthur_conan_doyle_books.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_off000056d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56D0 5108 bytes
SHA-256: d3a7c8247c6e5046c6fec1ede5b1802c7d6988840338d4d8fc31ef609912ef20
font_01_sfnt_off00006828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6828 10296 bytes
SHA-256: 92702480bd01324393b61e3a4b213b6af81ddc19bb4427d35c8529274b0d43f2

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