Malicious PDF — malware analysis report

Static analysis result for SHA-256 f816a704a395e86c…

MALICIOUS

PDF

69.6 KB Created: 2020-08-24 20:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b316f160596b62a0b1f5cdbd2844f3c SHA-1: 4074bc4c9cc647c8b73a9392b334ae43d20b5cf4 SHA-256: f816a704a395e86c82a227089a5686c5c19abfe4753287e87b429c34330aef6d
294 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link T1059.003 Windows Command Shell T1059.001 PowerShell T1566.002 Spearphishing Attachment

The PDF contains a mass external link farm, with one URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector. Heuristics indicate the document impersonates a cloud service and instructs the user to copy/paste content into a shell, likely to execute a payload. The presence of a password-protected archive lure suggests an attempt to bypass gateway scanning.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 8

  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Cloud document impersonation lure medium SE_CLOUD_DOC_LURE
    Document impersonates a cloud file-sharing service such as SharePoint, OneDrive, Google Drive, Dropbox, Box, or Microsoft 365 and asks the user to open, verify, or access a shared document
  • 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=android+sdk+17+version In PDF document text
    • http://files.thesharpeningstone.com/uploads/1/3/1/8/131856771/vusagud-zojebepuk.pdfIn PDF document text
    • http://konawip.beachpack40.com/uploads/1/3/1/6/131606343/519850.pdfIn PDF document text
    • http://files.njsfcahh.com/uploads/1/3/0/7/130740180/jalasigalilipa_lomad_gafujexe_fafemuj.pdfIn PDF document text
    • http://files.northmiresouces.org/uploads/1/3/1/3/131384589/fakirorefamopar.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/1/0436/8960/7321/files/vozaredamujatemibad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7634/6266/files/rimatizepukupi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/38773792611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19941062624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6028/0982/files/wofetopiravivotozen.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5951/9387/files/oracle_forms_ebs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/32308132197.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7591/1321/files/64741609047.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/34660157209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8575/6568/files/biology_notes_for_neet_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9807/9399/files/design_and_analysis_of_algorithms_book_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0458/1693/8662/files/pdf_split_tool.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_off0000bb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB32 4532 bytes
SHA-256: 2bb67df2b1ffc34b41165df1688a5c6f78fafd4159f594b961cd46318b7f5f76
font_01_sfnt_off0000caa2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA2 15616 bytes
SHA-256: ae0c48b3c7fe552a0d419a06e95c62866e3d5b8dc09f94874db38aa08200a099
font_02_sfnt_off0000fafd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFD 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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