Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7d1f57c2ecec053…

MALICIOUS

PDF

45.8 KB Created: 2020-08-14 15:01:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d3c19f352eff94a5903adb763e96da5 SHA-1: 211b26163c9e7a1f837da91927a49b75c49037cd SHA-256: a7d1f57c2ecec053847d9fd790bb4345d49c74406dc6e2cbee6034ea26747316
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text that suggests urgency and a call to action, aligning with a phishing or scam lure. The presence of a link farm indicates an attempt to distribute malicious content widely.

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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
  • 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=evangelismo+dinamico+luisa+walker+pdf
    • http://files.charmvilla.com/uploads/1/3/0/9/130969489/nazukidorarifow-lasejubelam-nipolazete-sigugufunaji.pdf
    • http://nodez.hulseenkelinrottweilers.com/uploads/1/3/1/3/131379255/489686.pdf
    • http://files.carolinapumpworks.com/uploads/1/3/2/7/132741241/femunafolul-rudizosoz.pdf
    • http://files.panhandletoyschnauzers.com/uploads/1/3/2/7/132740424/wivakupumejojimukiz.pdf
    • http://fudom.lotusenergyandmassage.com/uploads/1/3/0/7/130776407/307401.pdf
    • https://cdn.shopify.com/s/files/1/0432/2613/6743/files/pudewafitapedoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0697/5382/files/87497262102.pdf
    • https://cdn.shopify.com/s/files/1/0446/9909/1098/files/zozasajitukudiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/8640/5022/files/36121689103.pdf
    • https://cdn.shopify.com/s/files/1/0432/5752/8480/files/discords_to_join.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/40451565961.pdf
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/acupressure_points_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/9831/6707/files/40495255916.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/ziberosutadinif.pdf
    • https://cdn.shopify.com/s/files/1/0434/1514/2551/files/lexozibazej.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000713c.bin
bfb4afd170cd03338da1267c869c8c17c33bd141d0a27707ae79bfb997bd082e
pdf-font-stream PDF embedded font (sfnt) at offset 0x713C 5648 bytes
font_01_sfnt_off00008474.bin
4366dfe9077f739c824c4ae3c174620a9fc2cd5d0a09e4e07b109ab987b83fed
pdf-font-stream PDF embedded font (sfnt) at offset 0x8474 11004 bytes