Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdafc80ed7393bb…

MALICIOUS

PDF

45.1 KB Created: 2020-09-19 01:05:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b2cf1263edfdd6d468e06c70196193e SHA-1: d1c1a3ea32a0e6efe8a92e7d6d33cc747b2ff48b SHA-256: dfdafc80ed7393bb80eaf8c93676345caf27ed2fd73848908df463b9406ded17
128 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, contains text suggesting it is an 'answer key' and includes the malicious URL. This indicates a social engineering attack designed to trick the user into visiting a malicious site.

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.me/wix?keyword=project+lead+the+way+activity+7.3+tolerances+answer+key
    • http://files.weavefutures.com/uploads/1/3/0/9/130969614/kaserumubilolavotaj.pdf
    • http://files.johndecollibus.com/uploads/1/3/0/9/130969873/nibajub.pdf
    • http://rabifevom.theyellowsunstudio.com/uploads/1/3/1/4/131407995/zavenunuwalali.pdf
    • http://zakako.yellowstonebiblecamp.com/uploads/1/3/1/6/131606575/zutulod.pdf
    • http://bevuril.stickandstringtv.com/uploads/1/3/1/6/131637021/6482470.pdf
    • http://files.radioafric-aye.com/uploads/1/3/1/8/131856326/noxudozek-mifaxekazom-menugunojumazif-vekenedufir.pdf
    • http://files.willowwoodhandmade.co.uk/uploads/1/3/1/4/131453944/ponidiben.pdf
    • http://redival.rhinojewelrycad.com/uploads/1/3/1/6/131606165/nurewakaziw_mezidunamor_nomamawa.pdf
    • http://tipalij.wardscreekpto.com/uploads/1/3/0/7/130739732/668182.pdf
    • https://cdn.shopify.com/s/files/1/0435/0381/2773/files/49089077384.pdf
    • https://cdn.shopify.com/s/files/1/0431/1010/5255/files/traductor_de_documentos_de_aleman_a_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0427/4749/4567/files/97883453971.pdf
    • https://cdn.shopify.com/s/files/1/0439/5591/2862/files/hwang_jin_yi.pdf
    • https://cdn.shopify.com/s/files/1/0436/4910/6080/files/81482872923.pdf
    • https://cdn.shopify.com/s/files/1/0435/3707/2280/files/dead_cells_pc_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/6961/1932/files/63151448119.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000068e5.bin
0499fbcb718d7180cb338d4275f1f8320f655df8f9d8a365b6332e211e3505e6
pdf-font-stream PDF embedded font (sfnt) at offset 0x68E5 5696 bytes
font_01_sfnt_off00007c6e.bin
8a0a5a8d41c6d3443e453e90982ea3015bd906b8f56c612a3ba5d35c0a4dd584
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C6E 13472 bytes