Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1070ba271799e9a…

MALICIOUS

PDF

44.8 KB Created: 2020-08-10 06:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 315c79210f9b47f5ec27496ae0901d12 SHA-1: 555f0b379ca7c65d7934bf9c11ec5cc6cdcbd06b SHA-256: e1070ba271799e9a220ef49a1d97bd1444a9e817dba79fb1e51c5ef062f98e45
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a critical heuristic indicating it links to known malicious redirector infrastructure. It also exhibits characteristics of a PDF link farm, with 19 embedded external PDF links, many hosted on cdn.shopify.com. The document body is heavily obfuscated and contains a URL that appears to be part of the link farm. The primary attack pattern involves luring users to click on these links, which likely lead to further malicious content or phishing sites.

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=social+media+strategy+sample+pdf In PDF document text
    • http://files.michaelderjabin.com/uploads/1/3/1/3/131379059/7918897.pdfIn PDF document text
    • http://zenaxevu.it-starts-here.com/uploads/1/3/2/6/132683188/6889211.pdfIn PDF document text
    • http://files.yoursongstory.com/uploads/1/3/1/4/131453870/6374906.pdfIn PDF document text
    • http://files.jparkercyber.net/uploads/1/3/0/7/130775249/ginanidolorefi_zutazavow_xexatoxadizat_pujugejemalix.pdfIn PDF document text
    • http://files.laraodwyerbrown.com/uploads/1/3/2/7/132741322/d82dab9b.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/1/0437/8935/3117/files/zufazolozikepeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9634/2695/files/xilakodekimom.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0673/0144/files/16100494983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/pdf_ausfllen_online_kostenlos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1796/8543/files/bloodborne_suspicious_beggar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4126/6587/files/gurazajufone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7880/files/pogowuxabiwawudo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4346/1032/files/big_papi_net_worth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7986/8309/files/togafixakakexudidivewa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6134/4406/files/genetics_by_pk_gupta_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/63908687591.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5317/9289/files/45937190568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4043/9446/files/bijerogigato.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5197/3799/files/wozugotiduroj.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000706e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x706E 5680 bytes
SHA-256: a06f773b974b865bacfbc3518b470e1cc15969effdbbba15118df1f277348501
font_01_sfnt_off000083b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B9 10088 bytes
SHA-256: db1916b6c43e50833f133a9b7545c3ba818b3444b8fb5a65f7556e4783ccb2a2