Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6e837eeecb741cc…

MALICIOUS

PDF

41.4 KB Created: 2020-08-19 09:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1850476c82c353adb145ab2c00de89e6 SHA-1: e3ef47f6e246fbac9028122f205823257a59ee1c SHA-256: e6e837eeecb741cc6c48f40addbdcc822177495ae3a25836f0a577e6e958d7db
128 Risk Score

Malware Insights

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

The PDF contains a link farm and a malicious redirector, indicating an attempt to lure users to a harmful site. The document body explicitly mentions 'Top 10 navigation apps for android' and includes the malicious URL, suggesting a social engineering tactic to drive traffic to the redirector. The presence of numerous embedded links, many pointing to Shopify, further supports the link farm heuristic.

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=top+10+navigation+apps+for+android
    • http://files.sustainablenewton.org/uploads/1/3/1/4/131453215/5074591.pdf
    • http://rozal.northcasnoviabaptist.com/uploads/1/3/0/7/130738755/3452504.pdf
    • https://cdn.shopify.com/s/files/1/0435/5588/1111/files/metabolismo_del_etanol_en_el_higado.pdf
    • https://cdn.shopify.com/s/files/1/0428/2862/8124/files/18219036794.pdf
    • https://cdn.shopify.com/s/files/1/0433/0982/6213/files/nemisikawek.pdf
    • https://cdn.shopify.com/s/files/1/0433/9869/3022/files/votunitogo.pdf
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/postpartum_hemorrhage_guideline.pdf
    • https://cdn.shopify.com/s/files/1/0433/0664/7717/files/mysql_date_difference.pdf
    • https://cdn.shopify.com/s/files/1/0447/4968/4885/files/new_cutting_edge_advanced_teacher_s_book_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8259/files/bacteriology_slideshare.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2119/files/autocad_lt_to_dwg.pdf
    • https://cdn.shopify.com/s/files/1/0429/7195/5353/files/61652196641.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_off00005cbd.bin
b3d4ee59ea37341a9937725a920adcee7c3032993bc6ed7a9285a6a6b1bc3cc6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBD 5380 bytes
font_01_sfnt_off00006f18.bin
a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F18 1800 bytes
font_02_sfnt_off000077a4.bin
7ec4b174c58835860454178df8e98a670ec520a8300a15dea4d820491ff86699		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77A4 9644 bytes

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