Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce1072278dbfcb4…

MALICIOUS

PDF

33.4 KB Created: 2020-08-21 01:02:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f8b64d4440eed798af57b4d0dc7904aa SHA-1: f6cfee65a229947309f4cfdc750297e10bbb0f7f SHA-256: 9ce1072278dbfcb4e2cdff29160cbc1e04f51dbab3587de496a853518bd840c4
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.001 Malicious Link T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the same malicious URL and several other links hosted on cdn.shopify.com and other domains, suggesting a link farm designed to obscure the true destination. The heuristic firings confirm the presence of malicious redirector links and a link farm, indicating a likely phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=simple+present+negative+form+exercises In PDF document text
    • http://files.loesshillsalliance.com/uploads/1/3/1/4/131454496/wuboganixox_ripikovaluvox_pojodumipoxijeb_dozidiratizo.pdfIn PDF document text
    • http://files.arisgrandman.com/uploads/1/3/1/4/131406507/bugaga_pazopozesu_kerasug.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/1/0437/0841/6165/files/organization_of_shoot_apical_meristem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8991/1194/files/18099731743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8620/8406/files/25791381169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0729/5140/files/74865112202.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pusowa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8077/7882/files/52777610402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6922/6656/files/agricultural_engineering_project_topics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/the_passion_of_perpetua_and_felicitas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/nirolurozutimetuji.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 5

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_off00004441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4441 5564 bytes
SHA-256: b5bca1c4a26ddee9193c68a41a7ab2ce5e9420d228c7a2453a786a9cc2faaeef
font_01_sfnt_off0000571b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571B 9848 bytes
SHA-256: 053a955863e66d32f5674a52e6673119cdadbe795f547498fb024a186449e98a

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