Malicious PDF — malware analysis report

Static analysis result for SHA-256 96d01bef0cf79da8…

MALICIOUS

PDF

71.1 KB Created: 2020-08-08 15:38:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bfddd034230520472e21ebc056a90bc0 SHA-1: 84e9a25aea6f33807855e9779d029a1758e1aa86 SHA-256: 96d01bef0cf79da8ed26fac11197fe3464c7031d05b154ccdbd1df0a8a3db257
128 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.cc, which is disguised as a download link for 'Sahih al Bukhari pdf english'. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this, and PDF_SEO_LINK_FARM indicates a large number of similar links were present, likely for SEO manipulation or to host further malicious content. The SE_DOWNLOAD_BUTTON heuristic suggests a lure to trick users into clicking the link.

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.cc/pify?keyword=sahih+al+bukhari+pdf+english
    • http://files.brmreps.com/uploads/1/3/1/3/131379256/6160567.pdf
    • http://files.hideawaylakes1977.com/uploads/1/3/2/3/132303082/8595032.pdf
    • http://xaloxigu.windowsmanchester.com/uploads/1/3/1/4/131483254/4322674.pdf
    • http://bexisiro.kellymansfieldart.com/uploads/1/3/1/4/131453194/7963393.pdf
    • https://cdn.shopify.com/s/files/1/0432/6152/6166/files/79682076835.pdf
    • https://cdn.shopify.com/s/files/1/0455/4617/6677/files/rudram_namakam_chamakam_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/zajas.pdf
    • https://cdn.shopify.com/s/files/1/0438/1566/5826/files/wozirarizebitukalawo.pdf
    • https://cdn.shopify.com/s/files/1/0433/8830/5575/files/xiditinanolexokatujenukav.pdf
    • https://cdn.shopify.com/s/files/1/0429/3391/1705/files/10030449801.pdf
    • https://cdn.shopify.com/s/files/1/0428/9767/0303/files/68275512779.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/romixaxe.pdf
    • https://cdn.shopify.com/s/files/1/0429/6769/5509/files/amelia_jane_books.pdf
    • https://cdn.shopify.com/s/files/1/0427/7121/8588/files/factory_service_manual_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/joguxesexakigani.pdf
    • https://cdn.shopify.com/s/files/1/0437/5163/7141/files/7023052734.pdf
    • https://cdn.shopify.com/s/files/1/0432/3688/4642/files/18504066950.pdf
    • https://cdn.shopify.com/s/files/1/0430/0436/2906/files/ravabogopeferezuzugezog.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/mibufonisamapariderigu.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
stream_006_off0000e85f.bin
cce30127844a02f7ba5ceb406ffe18f85d9000326f9838745b8e459c02b2cb33		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0xE85F 22292 bytes
font_00_sfnt_off0000b0b2.bin
f85e0954fb753ffac1301ced56b22c4ab09f64eb496f23476446b86b531e2546		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0B2 5608 bytes
font_01_sfnt_off0000c3b9.bin
0f57eed92a4d3d22b5ead36d90c4a48a0937ec9f5f0fcb2f2492788229dd3654		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3B9 11000 bytes

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