Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1d8dbb0cfe46a99…

MALICIOUS

PDF

56.0 KB Created: 2020-08-09 22:58:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d62c619e6dc34edd37b552b5059b328b SHA-1: fe7185761aed852d78921225190474fa16d13954 SHA-256: d1d8dbb0cfe46a99adaa0fedde9a03d60621c57813eda54d2ee09c622dfc9412
128 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that points to ttraff.cc, a known malicious domain. The document body also contains numerous links to PDFs hosted on Shopify, likely part of a link farm to improve SEO for malicious content. The presence of a 'download button' heuristic further supports the lure of downloading a file. The primary malicious URL is https://ttraff.cc/pify?keyword=dictionary+english+to+tamil+meaning+free+download+pdf.

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=dictionary+english+to+tamil+meaning+free+download+pdf
    • http://files.andymcracing.com/uploads/1/3/0/7/130740262/ruxonero_lerulu_buxapiv.pdf
    • http://files.center4healthandsdc.org/uploads/1/3/2/8/132815318/kotilulogemamadofane.pdf
    • http://files.earthcraftpermaculture.com/uploads/1/3/2/7/132740536/3787877.pdf
    • http://files.mendedfaith.com/uploads/1/3/0/7/130739311/919953.pdf
    • http://files.jaysuneatstaipei.com/uploads/1/3/1/4/131408581/niwaxe_farajevevaza_vuranepulezube.pdf
    • https://cdn.shopify.com/s/files/1/0434/9889/7574/files/bapopefex.pdf
    • https://cdn.shopify.com/s/files/1/0438/1373/2512/files/medical_surgical_nursing_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0437/2742/1608/files/puwedodiwawomureboxipa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25322908130.pdf
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/66090581552.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/wenowopibabugozanibuza.pdf
    • https://cdn.shopify.com/s/files/1/0430/9316/4181/files/disusewutenewawulutepeb.pdf
    • https://cdn.shopify.com/s/files/1/0428/9619/5737/files/45594778741.pdf
    • https://cdn.shopify.com/s/files/1/0428/4514/3206/files/design_as_art_bruno_munari_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0431/0073/3596/files/pirokaputenegusaxomabewu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2817/5265/files/robosejenebozokunofizejo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/nezonarekozepow.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/wimafodir.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_004_off00007022.bin
6d401934d9f29390103db3a45a057b2352793366fdc66d26670266ebc74c8ea8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x7022 19116 bytes
font_00_sfnt_off00005d5f.bin
58dc6deea16e51c523b11904b305932b4022bfcece95ee9265071d52e6c69647		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D5F 5548 bytes
font_02_sfnt_off00009999.bin
2b067ba37d9354990a13412be48548436993dd72f806e4e9c3e6ccdde52a7057		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9999 13752 bytes
font_03_sfnt_off0000c3fe.bin
4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FE 4324 bytes

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