Malicious PDF — malware analysis report

Static analysis result for SHA-256 1edfb7598754faa0…

MALICIOUS

PDF

61.6 KB Created: 2020-08-23 21:48:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42d01ee29e59ee92b517496294b59599 SHA-1: bc8d292df8c8e422992462baa1e2dd0e7497e4ce SHA-256: 1edfb7598754faa0d543f980e0cb40a0a477b021eac072a99028b03856d966a4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, with one critical heuristic identifying it as a PDF link farm. The primary malicious URL, https://ttraff.ru/pify?keyword=chauriko+chamro+churpi+full+song, is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the redirector URL and appears to be a lure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=chauriko+chamro+churpi+full+song
    • http://nabetu.inspirationstudiosgallery.com/uploads/1/3/1/4/131453293/ca28d2c61c43.pdf
    • http://wexenaj.theriverrunsthroughus.uk/uploads/1/3/0/7/130775639/cc06fc889ea8edd.pdf
    • https://cdn.shopify.com/s/files/1/0433/2067/2409/files/71530711419.pdf
    • https://cdn.shopify.com/s/files/1/0433/8148/9813/files/13463242450.pdf
    • https://cdn.shopify.com/s/files/1/0431/5014/7733/files/definicion_de_bacterias_gram_negativas.pdf
    • https://cdn.shopify.com/s/files/1/0434/2664/4125/files/introduction_to_statistical_learning.pdf
    • https://cdn.shopify.com/s/files/1/0438/4551/7469/files/muxatemeganajamadaz.pdf
    • https://cdn.shopify.com/s/files/1/0438/5544/6176/files/admixture_user_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/95906050429.pdf
    • https://cdn.shopify.com/s/files/1/0437/4642/7031/files/fajamaxexudixofedabebi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/transistor_mosfet_canal_p_datasheet.pdf
    • https://cdn.shopify.com/s/files/1/0439/8556/7902/files/names_of_god_in_the_bible_and_their_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0437/1077/5464/files/enchanted_forest_chronicles.pdf
    • https://cdn.shopify.com/s/files/1/0434/7576/3353/files/57343960034.pdf
    • https://cdn.shopify.com/s/files/1/0431/4546/1909/files/joe_weider_bodybuilding_training_system.pdf
    • https://cdn.shopify.com/s/files/1/0434/7792/6040/files/18528513607.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c39.bin
0fbb7e5a38b4b4a5d88ec683e158ed29a8ba07ec60f95392cb0b5d0e4c563794		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C39 5400 bytes
font_01_sfnt_off00007e71.bin
d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E71 3720 bytes
font_02_sfnt_off000089d4.bin
f2ab56dad67939acf977566823989355110c362aa0e54bed1d239a94d8d8c6b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D4 13248 bytes
font_03_sfnt_off0000b36e.bin
a2d115f0f97de8ad79ff358ffc77a456361852623a062a0fc59f2585ee3261ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB36E 16316 bytes
font_04_sfnt_off0000c939.bin
3bc340a030f4fabf2047ac2bd1c3e66bb5348d07afe29bf0e84307c4fb062412		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC939 8768 bytes

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