Malicious PDF — malware analysis report

Static analysis result for SHA-256 44aec0318d6c041f…

MALICIOUS

PDF

52.4 KB Created: 2020-08-12 05:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 877a6abe537894c367760af45ee1d6e8 SHA-1: b5fa13db1c23067de275d145b4765bc3ee957a77 SHA-256: 44aec0318d6c041f7bc8ae5edef4646667c88ee4629c62c7be10b752d8fba099
120 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 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the intent to redirect the user. No scripts were extracted from this sample.

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.com/pify?keyword=marksheet+formula+in+excel+pdf
    • http://files.reachyourmentor.com/uploads/1/3/0/7/130775205/benedawimug_fuwarotaloni_dulof.pdf
    • http://vafatuta.simonogdenworks.com/uploads/1/3/2/6/132682090/vejujumatatijir_danetudedeg.pdf
    • http://pefuz.theplayactionsports.com/uploads/1/3/1/6/131606056/xuzudemotiniwuzagol.pdf
    • http://files.runningbugfarm.com/uploads/1/3/2/8/132814958/naminijonux.pdf
    • https://cdn.shopify.com/s/files/1/0428/6310/0070/files/96177982990.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2193/files/zekisazuduzaxafetizuwu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8320/2711/files/dakoraku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/fululofidoma.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/43720841008.pdf
    • https://cdn.shopify.com/s/files/1/0433/8201/4108/files/nurukexitufirufizixiris.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/66378050230.pdf
    • https://cdn.shopify.com/s/files/1/0432/3246/0960/files/kosevaginazonitazu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1512/7708/files/arrtez_de_vous_trouver_des_excuses.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/44511213843.pdf
    • https://cdn.shopify.com/s/files/1/0432/6791/5936/files/45846393435.pdf
    • https://cdn.shopify.com/s/files/1/0437/8345/4871/files/30162058011.pdf
    • https://cdn.shopify.com/s/files/1/0432/6916/1110/files/jefaketar.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_off00007521.bin
d1d35922ca92610648eb3d1c6be93d72004287608f14910d0429bfb633311723
pdf-font-stream PDF embedded font (sfnt) at offset 0x7521 5532 bytes
font_01_sfnt_off000087d2.bin
d2a58656aeb6b39571532cf1a708c09836aba57c041236b44f0f4d53cb45e418
pdf-font-stream PDF embedded font (sfnt) at offset 0x87D2 7280 bytes
font_02_sfnt_off00009f8c.bin
39f3a2037c607031931080f60c28ba7668c8479545edd6b9fe248be06cfd2838
pdf-font-stream PDF embedded font (sfnt) at offset 0x9F8C 10636 bytes