Malicious PDF — malware analysis report

Static analysis result for SHA-256 3850240421d01495…

MALICIOUS

PDF

70.2 KB Created: 2020-08-09 10:17:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 747758605dd0cb8238b955db33f57c47 SHA-1: 6a5f40c0839bc6f36298727182dc2c4d1ce65881 SHA-256: 3850240421d0149589c66d29c959117cc717675e4bb44d21c95b5c9b0239d7ad
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=asmaul+husna+arabic+and+tamil+pdf'. The document body, though heavily obfuscated, contains this URL and appears to be a lure related to a PDF search term. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, suggesting an attempt to distribute malicious content through seemingly benign platforms.

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=asmaul+husna+arabic+and+tamil+pdf
    • http://files.themahaffeyagency.com/uploads/1/3/0/7/130740625/9230422.pdf
    • http://files.societyofhealingtouchprogramalberta.ca/uploads/1/3/2/6/132682646/713c4d8.pdf
    • http://wokixamo.maidonthemoonstainedglass.com/uploads/1/3/2/6/132696212/tureb.pdf
    • http://files.fionasophiaphotography.com/uploads/1/3/0/7/130740323/00e8dc631f7.pdf
    • http://files.meghanjaneyoga.com/uploads/1/3/1/6/131637362/takunamiji.pdf
    • https://cdn.shopify.com/s/files/1/0433/0268/2789/files/27033631783.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0076/files/word_analogy_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0436/9947/0486/files/32751264332.pdf
    • https://cdn.shopify.com/s/files/1/0433/4823/0297/files/largest_int_java.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/ncaa_women_s_volleyball_bracket_2016.pdf
    • https://cdn.shopify.com/s/files/1/0434/4188/1254/files/papapewesonigufumuromiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/vixako.pdf
    • https://cdn.shopify.com/s/files/1/0431/8383/3249/files/pugapuzedefapotedev.pdf
    • https://cdn.shopify.com/s/files/1/0430/1615/9381/files/cantaloupe_island_big_band.pdf
    • https://cdn.shopify.com/s/files/1/0438/1779/5741/files/ahle_hadees_ki_haqeeqat.pdf
    • https://cdn.shopify.com/s/files/1/0436/4579/6512/files/85930077991.pdf
    • https://cdn.shopify.com/s/files/1/0434/4007/9005/files/82382936231.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fejekav.pdf
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/nizavadiwi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/retrieve_blob_from_mysql_php.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0000d666.bin
efb85a091e858ac2f04403a521a220f33692b8610e15571571618f1793de7183		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xD666 29516 bytes
font_00_sfnt_off00008d97.bin
5973948ce7896f44ba00bcdd53b262bbd5c7d341eac3e80af6e7388b72b08a86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D97 5524 bytes
font_01_sfnt_off0000a029.bin
09cf751ff7e63b010f9c4dc29b8f6af2e57caec3462a759b9c07055ac1be550d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA029 5508 bytes
font_02_sfnt_off0000b2cd.bin
a50c4e01400c137e28fb2a8768e7184e574a281f56456d452815c1ee0398a6c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB2CD 10408 bytes

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