Malicious PDF — malware analysis report

Static analysis result for SHA-256 253e0f87351b4d44…

MALICIOUS

PDF

36.3 KB Created: 2020-08-09 23:41:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d683a488e0cffec6f54d88325a97e86b SHA-1: 1d0fd6bb7450bb52433a20655eb7dc476f61fea1 SHA-256: 253e0f87351b4d4493eaa6c462ed813244f208c8514bfef55847f36a9b8529ac
234 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM. One of the primary links, 'https://ttraff.cc/pify?keyword=pen+ink+drawing+alphonso+dunn+pdf', is identified as a malicious redirector. The document body also contains visible instructions or command text involving Windows script/execution tools, as indicated by the SE_LOLBIN_RUN_COMMAND heuristic, suggesting an attempt to execute further malicious code.

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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.cc/pify?keyword=pen+ink+drawing+alphonso+dunn+pdf In PDF document text
    • http://files.ozgrav.org/uploads/1/3/0/7/130775866/22a8d9637.pdfIn PDF document text
    • http://nodizol.nalomelihoney.com/uploads/1/3/0/7/130738870/814929.pdfIn PDF document text
    • http://tenemevek.evalefkowitz.com/uploads/1/3/1/4/131453045/e2c9f73862e7.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/1/0434/4204/5090/files/50222037560.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1103/0683/files/tofime.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2804/6233/files/58974408519.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5332/6242/files/tifiwawafisisebazawos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/sadewuteviduzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4936/1314/files/fomezejifigubaparujege.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xopiforosolakalaxelavur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/what_is_curl.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/captain_sim_757_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7554/2950/files/mtg_arena_crashing.pdfIn macro / runtime command snippet
    • https://cdn.shopify.com/s/files/1/0429/2152/5407/files/1001_questions_mcat_biology.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
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/fiIn macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000043de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43DE 5260 bytes
SHA-256: 613fa5220e5e390de9412991a1fbd2466857b3bf9e806d3040b1cbdf30e51dec
font_01_sfnt_off000055c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55C0 9464 bytes
SHA-256: c03593b20ead3fe76a37c386c7817cd2226ea8e6111b5af015a0a0b917b9e30d
font_02_sfnt_off00007623.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7623 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333