Malicious PDF — malware analysis report

Static analysis result for SHA-256 1181eb99de40147c…

MALICIOUS

PDF

43.3 KB Created: 2020-07-11 18:44:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b045f7cad0c6c6bf952bed311bdfe6e5 SHA-1: f410dbf6ea89ecbec6c9ae7fd415de8a8baa5798 SHA-256: 1181eb99de40147c853e3575a3fef5ebd22e41882f2b6d2d99ff63806c72e75f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which are designed to appear as academic resources. The primary malicious link, 'https://ttraff.cc/wb?keyword=original%20jd%20lee%20inorganic%20chemistry%20pdf', redirects to known malicious infrastructure. The heuristic 'PDF_SEO_LINK_FARM' indicates a deliberate attempt to create a link farm, likely for SEO manipulation or to distribute malicious content through seemingly legitimate-looking PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/wb?keyword=original%20jd%20lee%20inorganic%20chemistry%20pdf
    • http://files.sweetcheeksphotog.com/uploads/1/3/1/4/131453749/meron.pdf
    • http://files.avhauling.com/uploads/1/3/1/3/131398479/550cf41cf.pdf
    • http://files.ucsdspeechanddebate.org/uploads/1/3/2/8/132815828/vujegitejevebo.pdf
    • http://files.autyphotos.com/uploads/1/3/1/3/131379774/1295896.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/94044952673.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/41448402009.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vibemegabixowosepabotabux.pdf
    • https://butaxir.files.wordpress.com/2020/07/separ.pdf
    • https://nowirew.files.wordpress.com/2020/07/62167605072.pdf
    • https://sonaloz.files.wordpress.com/2020/07/bikogowirawazolenu.pdf
    • https://ponisoxi.files.wordpress.com/2020/07/muteva.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/61053474184.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91489653134.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jepomosojavadoji.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/47871356720.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/93336639176.pdf
    • https://cdn.shopify.com/s/files/1/0427/7354/5116/files/musavesupigosipowulituzo.pdf
    • https://cdn.shopify.com/s/files/1/0427/7954/1671/files/xiketapovus.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78046530146.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a98.bin
0e6fe7078d1504df81d3a35964afac75e1ecf882ac7d1f917e8275197dcb2dd2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A98 5560 bytes
font_01_sfnt_off00007d5e.bin
35c4a879df178ba640603ba2e300a8a73fdc12c6f63a72c41eeb2a4c1e9ac417		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D5E 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.