Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b0d685c10afb88…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 17:41:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8acff6d1c18c1b4317191fcad01554c8 SHA-1: 1bcfa0c1b7f34d4b59ba428352a1921fe4a7b20a SHA-256: a0b0d685c10afb888e45e60f18cccde06555bb129fc84094c72dd3d343c85721
234 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1059 Command and Scripting Interpreter T1059.003 Command and Scripting Interpreter: Windows Command Shell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/pify?keyword=and+install+appium+in+ubuntu'. Additionally, it exhibits a high number of external PDF links, with one hosted on Shopify. The document body also contains a lure instructing the user to copy and paste content into a shell, indicating an attempt to trick the user into executing commands. No scripts were extracted from this sample.

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.com/pify?keyword=and+install+appium+in+ubuntu In PDF document text
    • http://files.linhr.com/uploads/1/3/1/0/131070189/tabotusatoboza.pdfIn PDF document text
    • http://files.fayslsdrivingschool.co.uk/uploads/1/3/0/7/130776073/8195537.pdfIn PDF document text
    • http://files.napavalleyartworkshops.com/uploads/1/3/2/7/132740670/126b119acd.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/1/0427/4028/5607/files/69114526111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6090/3582/files/gutovisir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2888/8227/files/kodukidulisexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5743/0176/files/compress_mac_app.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5934/files/90242441382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2530/9604/files/finoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8695/4140/files/cardiac_surgery_certification_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/kuxuwejurizaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5530/0249/files/xenep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3993/2064/files/91580758465.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/33958275636.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0760/4896/files/51708801585.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8642/9861/files/xunelifoganel.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_off000062b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B3 5136 bytes
SHA-256: f57f9f8f653b328181161361f4bbcada034fd2a8141a986119d053f099cbf1b7
font_01_sfnt_off0000740a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x740A 10272 bytes
SHA-256: 44b375a6992d61b530b1c1eccb06a67589e6309a1d205c1ecef405e7b38a103f