Malicious PDF — malware analysis report

Static analysis result for SHA-256 58fbee822eb7379c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-19 00:07:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5ea12294432ab86df6b25ae8e016b635 SHA-1: 44cb141adf155689d429079f2a379404bf440289 SHA-256: 58fbee822eb7379c9bd72f6cc1a0fffe03194acebdb5113218c5f4ce8361a33a
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic firings indicate that this is likely an SEO link farm designed to manipulate search engine results or to distribute malicious content. No scripts were extracted from this sample, limiting further analysis of its behavior.

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=ff14+sightseeing+log+guide
    • http://files.virginiaasthmacoalition.org/uploads/1/3/1/1/131163684/5949820.pdf
    • http://files.gnslivestocknutrition.com/uploads/1/3/1/1/131164202/8341120.pdf
    • http://files.knowyourbusinessplans.com/uploads/1/3/1/8/131858592/8523756.pdf
    • http://buwal.simplybirthclasses.com/uploads/1/3/1/6/131606227/fokajegebusa-velax-gaxiwod-rajolafamowaxe.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/autocad_vs_autocad_lt_comparison_matrix.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/rounded_concrete_forms.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/bepuvabuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/5572/7260/files/60568702375.pdf
    • https://cdn.shopify.com/s/files/1/0437/2099/9064/files/spelling_bee_word_list_for_grade_2.pdf
    • https://cdn.shopify.com/s/files/1/0431/8927/2725/files/xawabebekixotananilaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/5555/4458/files/bekepaguxuzepixavasufuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9203/files/modudiserufagiwixasanaliz.pdf
    • https://cdn.shopify.com/s/files/1/0437/8732/1505/files/jemix.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/lutebusavimavob.pdf
    • https://cdn.shopify.com/s/files/1/0433/3276/3801/files/26406681522.pdf
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/govetokiwabisitumamopepu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3033/0016/files/80446185639.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_off000065e6.bin
c02fc65a0ca50a4d9670b7b2b766939e19c4292fdc2b023adadc077df2501d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65E6 4960 bytes
font_01_sfnt_off000076cd.bin
be0181317d54f15773b31b4636573418bdc71b02f102f037f34ab0114d518410		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CD 15632 bytes

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