Malicious PDF — malware analysis report

Static analysis result for SHA-256 84ec458271b45bd5…

MALICIOUS

PDF

40.9 KB Created: 2020-08-19 08:28:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4fac24e12603143f1f26b4443dddb8dc SHA-1: 40d0049de03af4f450eed6ba286c15a599d8d016 SHA-256: 84ec458271b45bd5fbd941bb1b89e38bc0ba034e536675246cd2115950a66a4e
242 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirectors and a large number of SEO-optimized PDF links, suggesting a phishing or malware distribution scheme. The document body and heuristics also indicate a lure to execute clipboard commands, likely to trick the user into pasting malicious commands into a shell. The primary malicious URL identified is https://ttraff.cc/pify?keyword=iso+windows+7+usb+bootable, which is used in conjunction with a fake download button to entice users.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 7

  • 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
  • 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.cc/pify?keyword=iso+windows+7+usb+bootable In PDF document text
    • http://files.donnellamonk.com/uploads/1/3/1/6/131606923/nalow_foganozab_pusobubozu.pdfIn PDF document text
    • http://files.steveneillsgarage.com/uploads/1/3/1/3/131379049/nexokala.pdfIn PDF document text
    • http://sizevig.tivertonhsboosters.com/uploads/1/3/0/8/130874284/pesewugebobebusesix.pdfIn PDF document text
    • http://rewada.greenkayla.com/uploads/1/3/2/6/132681352/b0ec945b.pdfIn PDF document text
    • http://files.xintongwang.site/uploads/1/3/1/6/131636719/bixiz.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/1/0434/3106/7813/files/dumezagezedenize.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3258/2056/files/nafedupirinugezuwogokev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8471/7979/files/zobufumugake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9875/1641/files/88233012692.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3996/4834/files/anabase_saint_john_perse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9200/9365/files/xasixonukefavopawubuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/22598323912.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3142/0314/files/45998094999.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6561/4234/files/nogigofomezinem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6203/4589/files/50722127200.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5806/0703/files/jowibolepuloxonusote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8278/4676/files/42338833491.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2521/0263/files/cerebrovascular_disease_review.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_off000062b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B5 4972 bytes
SHA-256: 4a0ab02b897fea8a53c0d7c95ffd40fdd82ecc1c2776a60b99726b2ffe796650
font_01_sfnt_off000073c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 10248 bytes
SHA-256: 3150aed24890edced90cb0cb49311b67b5af2e9792d30967a50e23c5c2101659