Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7a48e4a410303ac…

MALICIOUS

PDF

41.3 KB Created: 2020-08-02 11:36:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c23602d50dde7675628a56f62f2699d3 SHA-1: 6c5fa13c8ab2cf5c9363348fb43eb26c13e33f5b SHA-256: f7a48e4a410303acdf3e2b3dca6adc3a3f730947a4a8d2a847207da8e8aea07d
234 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 User Execution: Malicious Link T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a malicious redirector link pointing to ttraff.ru, which is a known malicious infrastructure. It also features a large number of embedded links to other PDFs hosted on Shopify, suggesting a link farm for SEO poisoning or traffic generation. The document body and heuristics indicate a lure to execute commands, likely to trick the user into visiting the malicious link or copying/pasting content into a shell.

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.
  • 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
  • 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=create+new+github+repo+from+command+line In PDF document text
    • http://files.exceltherapyconditioning.com/uploads/1/3/1/4/131408024/fesefexoxigof_kepujawafuxuzi_tuvewuviz.pdfIn PDF document text
    • http://files.johndorian.com/uploads/1/3/0/7/130738765/6313104.pdfIn PDF document text
    • http://files.katiehornphotography.com.au/uploads/1/3/2/6/132683140/364771.pdfIn PDF document text
    • http://files.uniquethingsbylingmerth.com/uploads/1/3/0/7/130739227/154474.pdfIn PDF document text
    • http://files.supershiftery.net/uploads/1/3/1/3/131379700/5ef4484d4.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/1/0431/5276/9192/files/zalifitogexunowuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9993/1295/files/20041338057.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7854/1722/files/18225026353.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4104/5145/files/dowakobufixokaminopokew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7117/5846/files/xaliwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6191/1458/files/suwizijuguwuwaxitixub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6372/9557/files/terorujuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7739/3815/files/nufubovenibusopebomawus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3330/3976/files/zirobilifokanakedan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/19373886978.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/7485095273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/18517499905.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87294954422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9511/2347/files/33836352619.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_off0000605d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605D 5528 bytes
SHA-256: 19fb2e398c5d657d58823e5e42f62c599cb0ab9422c660f3f494138d4b7e3819
font_01_sfnt_off0000730b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x730B 10772 bytes
SHA-256: 2c417d2146bfe0e0ad37015051678d39cdd93288556727ced7f9c0021d9464bd