Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a83d7e5977c526…

MALICIOUS

PDF

44.8 KB Created: 2020-08-25 13:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8d3bf8915c3d7e1b9e352ab4f56877be SHA-1: e33e86375e109acece2e30aa193eb67c3f29a17d SHA-256: 90a83d7e5977c526cf1874065dc702a98f4594dbbf873c2b1b9a1944c51b439b
270 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple heuristics indicating malicious intent, including a link to a known malicious redirector and a link farm. It also employs social engineering tactics by presenting a download button and requesting sensitive recovery secrets or private keys, and lures the user to install a browser update. The embedded URL https://ttraff.com/pify?keyword=autoit++for+selenium likely leads to a malicious payload or phishing page.

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.
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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.com/pify?keyword=autoit++for+selenium In PDF document text
    • http://files.balboajerkycompany.com/uploads/1/3/0/7/130775786/rimumi.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/1/0428/5900/4070/files/averages_from_a_table_worksheet_tes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1633/0152/files/dazilitizekusaro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3004/4062/files/33526573338.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/melufukerimogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9587/5989/files/goferazilot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2440/8988/files/nunadis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9468/8423/files/qualitative_data_analysis_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0461/8348/1507/files/cookies_google_chrome_android.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9255/7467/files/best_video_er_for_mac_online.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2544/9628/files/nageze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8566/9279/files/tolaxadaguramap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/24453665549.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 2

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_off00007447.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7447 4692 bytes
SHA-256: e2b699ed3ee8526002a49a48dc3ad38c93889a67657b6b6ed289a8c06d496756
font_01_sfnt_off00008421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8421 10192 bytes
SHA-256: a64dd0f2cd0c2f4a7a6643669702c8b2d22391e6198da21ffaa504ae8315c75a

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