Malicious PDF — malware analysis report

Static analysis result for SHA-256 c61f8baf44bbebc9…

MALICIOUS

PDF

44.1 KB Created: 2020-08-11 14:03:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72fdb24216a9b60ca27c0ce169403c6d SHA-1: 95a923cebdaad23cf31f589b2ab9ec1c4df37c71 SHA-256: c61f8baf44bbebc99c299817f23e19b34c15432bad9355cc9aba61e8b369622c
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'https://ttraff.cc/pify?keyword=numerologia+angelical+libro+pdf', suggesting a phishing or malware distribution attempt. Another critical heuristic flagged the document as a link farm, with numerous links to Shopify-hosted PDFs, indicating a potential SEO poisoning or traffic generation scheme. The document body, though heavily corrupted, contains fragments of the URL 'https://ttraff.cc/pify?keyword=numerologia+angelical+libro+pdf', reinforcing the malicious intent.

Heuristics 3

  • 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.
  • 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=numerologia+angelical+libro+pdf
    • http://files.earthsherbal.com/uploads/1/3/1/4/131408432/9293a2.pdf
    • http://files.shellybroughtonart.com/uploads/1/3/0/7/130775856/bimarenozazuvon.pdf
    • http://files.burmataskforce.ca/uploads/1/3/0/8/130874381/lisisevepo.pdf
    • https://cdn.shopify.com/s/files/1/0435/2190/0696/files/facade_yes_no_oracle.pdf
    • https://cdn.shopify.com/s/files/1/0428/7738/6918/files/pupesapemavizatazefelovop.pdf
    • https://cdn.shopify.com/s/files/1/0441/1038/1208/files/lexical_cohesive_devices.pdf
    • https://cdn.shopify.com/s/files/1/0433/2588/2518/files/uppers_downers_all_arounders.pdf
    • https://cdn.shopify.com/s/files/1/0432/2243/3953/files/vufotoxivatilijoputosog.pdf
    • https://cdn.shopify.com/s/files/1/0437/7785/1553/files/vogadek.pdf
    • https://cdn.shopify.com/s/files/1/0432/8918/2376/files/96746281618.pdf
    • https://cdn.shopify.com/s/files/1/0436/0034/7299/files/nom_factores_psicosociales.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/employee_evaluation_form.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27055139941.pdf
    • https://cdn.shopify.com/s/files/1/0438/8788/6488/files/84501720989.pdf
    • https://cdn.shopify.com/s/files/1/0433/1149/7366/files/23592225016.pdf
    • https://cdn.shopify.com/s/files/1/0427/6148/6503/files/85131828800.pdf
    • https://cdn.shopify.com/s/files/1/0431/1813/3405/files/jufekemu.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_off00006e1d.bin
9ad89b130eb316e7b9b5269d3a7aff402bc281e71ded6ad67acdb723d4edadb4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1D 5408 bytes
font_01_sfnt_off00008064.bin
a995c56ccc71486d20e47d4c8e714c1f8fefe70a85d0c966507f389bcc17471a
pdf-font-stream PDF embedded font (sfnt) at offset 0x8064 10124 bytes