Malicious PDF — malware analysis report

Static analysis result for SHA-256 cfb245633493b09f…

MALICIOUS

PDF

42.1 KB Created: 2020-08-19 03:03:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fce6057d87765044b80c1083b964bfb SHA-1: 083a5a3e182df6d684e3220c43d7a654c05c2449 SHA-256: cfb245633493b09fd12a72ce192205d228c390592cee1d2f3b41b08aa2bfc99e
150 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=public+policy+analysis+peter+knoepfel+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to a malicious site. The presence of a large number of external PDF links, many hosted on Shopify, further supports the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/pify?keyword=public+policy+analysis+peter+knoepfel+pdf
    • http://files.lauriannefiorentino.com/uploads/1/3/1/4/131407492/lesolugoruwesod-fobefew-jopunetabejavij-tanuzodopemi.pdf
    • http://files.pruewalkerfasd.com/uploads/1/3/1/4/131437953/deboxepij.pdf
    • http://pujotoke.djspizza1.com/uploads/1/3/0/8/130813528/4dd47d1bb1.pdf
    • http://files.gambia-birdingexperience.com/uploads/1/3/0/8/130813042/1274542.pdf
    • https://cdn.shopify.com/s/files/1/0433/2381/8139/files/kebumopilerozinis.pdf
    • https://cdn.shopify.com/s/files/1/0429/0691/0876/files/barron_s_gre_complete_word_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/8674/0646/files/heap_sort_java.pdf
    • https://cdn.shopify.com/s/files/1/0444/5346/2183/files/dragon_age_console_command.pdf
    • https://cdn.shopify.com/s/files/1/0429/8991/2218/files/the_test_of_righteousness_vanilla.pdf
    • https://cdn.shopify.com/s/files/1/0449/7873/3224/files/awg_to_mm_conversion.pdf
    • https://cdn.shopify.com/s/files/1/0430/8641/3985/files/hain_celestial_group_inc_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0433/7975/3109/files/25500980416.pdf
    • https://cdn.shopify.com/s/files/1/0429/6287/8618/files/phd_thesis_evaluation_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0447/9765/7248/files/historicismo_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/vopopawez.pdf
    • https://cdn.shopify.com/s/files/1/0428/6811/3574/files/anglais_en_francais.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005916.bin
da68cc2bcb6c3e0b8df6ecf929fbabef8c727a06a2ca62d6a3ab24c474e327ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x5916 5340 bytes
font_01_sfnt_off00006b3b.bin
dfceae58195c8c780475b22ca94e02ee8f232981f077add0316946c36b840735
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3B 9936 bytes
font_02_sfnt_off00008d3c.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3C 4324 bytes