Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fa1e0d406494c32…

MALICIOUS

PDF

45.3 KB Created: 2020-08-18 23:39:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9119174cc68f21d0536f14cf29f705af SHA-1: 39f52601ea2402e7c79b833a835c6d276ef40bf1 SHA-256: 1fa1e0d406494c3281c1892e4206a495b90ad24627ac452d7d47f95ee5a993d6
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=amity+university+online+application+form+last+date'. Additionally, it exhibits a PDF link farm, with numerous links hosted on cdn.shopify.com and other domains, suggesting an attempt to distribute malicious content or SEO poisoning. The document body, though heavily obfuscated, contains similar URLs, reinforcing the malicious intent. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=amity+university+online+application+form+last+date
    • http://padik.hersacredsanctuary.net/uploads/1/3/2/6/132681862/779156.pdf
    • http://xisigi.smalladventuresphotography.com/uploads/1/3/1/4/131453598/jeziwanusepeme-nijojodijotonin-bomugoz.pdf
    • http://files.lasvegasspacover.com/uploads/1/3/1/8/131856330/nurajasujafud.pdf
    • http://files.bluewrenadventures.com/uploads/1/3/0/9/130969915/2f0ae85c83.pdf
    • http://files.nnhst2.org/uploads/1/3/1/3/131380558/koxam_dutupiladal_zowozo_romiloxori.pdf
    • https://cdn.shopify.com/s/files/1/0428/3065/9750/files/wefoj.pdf
    • https://cdn.shopify.com/s/files/1/0431/3877/7249/files/english_dictionary_free_for_android_apk.pdf
    • https://cdn.shopify.com/s/files/1/0438/6432/6309/files/dupoganuzupupizuso.pdf
    • https://cdn.shopify.com/s/files/1/0430/8218/6905/files/band_9_ielts_writing.pdf
    • https://cdn.shopify.com/s/files/1/0433/1569/1675/files/boom_beach_apk_apkpure.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8865/files/97775608112.pdf
    • https://cdn.shopify.com/s/files/1/0440/8734/5304/files/bojegatemozekusezakir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4995/1138/files/clinical_ocular_pharmacology.pdf
    • https://cdn.shopify.com/s/files/1/0430/7920/5031/files/23983351280.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_off000064c6.bin
7d2e7635565a45648fe2f18f130e1c38115f8f8bddc25b09b399440e5901a3bf
pdf-font-stream PDF embedded font (sfnt) at offset 0x64C6 5336 bytes
font_01_sfnt_off000076d6.bin
c2b05d44e2d57f0b0b8c05aeeac1fb3023813305cfd3db88a350710ebd430000
pdf-font-stream PDF embedded font (sfnt) at offset 0x76D6 10128 bytes
font_02_sfnt_off00009970.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x9970 4324 bytes