Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eadde4f3abaadfa…

MALICIOUS

PDF

42.6 KB Created: 2020-09-08 19:15:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f65c21612b8e7998aaa736b485f0a15 SHA-1: 9b739f916b04b9f47bc4ccb8b19bb42307c041a6 SHA-256: 5eadde4f3abaadfa4df509532fe7b0eb5a5591baf0739f7d327b0a2cc3e02c5c
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one identified as a malicious redirector, disguised as a software attendance management solution. This suggests a phishing or scam attempt to redirect users to malicious infrastructure. The presence of many external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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
  • 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.club/wix?keyword=software+attendance+management+solution+x606
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5852/8405/files/68361951272.pdf
    • https://cdn.shopify.com/s/files/1/0440/7335/3381/files/teacher_s_guide_to_google_classroom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9078/9020/files/56961538558.pdf
    • https://cdn.shopify.com/s/files/1/0431/9114/0501/files/63205306554.pdf
    • https://cdn.shopify.com/s/files/1/0434/7212/6104/files/azure_az_103_study_guide.pdf
    • https://static.usrfiles.com/ugd/b8c837_37dda59325b84745b1f6d33c61e9f468.pdf
    • https://static.usrfiles.com/ugd/67f5f7_8a3eb0fba9934a40967ed5ce952a5de4.pdf
    • https://static.usrfiles.com/ugd/70094d_5fe2352379004de28e195ee07784a9f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_232f1ba59f154013bfdfcf99f5e48480.pdf
    • https://static.usrfiles.com/ugd/dc98cc_1e2763b910774f7f812560df0cf75e6f.pdf
    • https://static.usrfiles.com/ugd/f0e51d_63acc301ddbc49679bdeb5a175bd8acb.pdf
    • https://static.usrfiles.com/ugd/3402b1_7abf328adc21452da8a5086a0bd7977c.pdf
    • https://static.usrfiles.com/ugd/d5cf39_3933a90f9c4947de8e879ba5f18ec199.pdf
    • https://static.usrfiles.com/ugd/a474dd_7c784764f5b24eb48224b6c6908f7b33.pdf
    • https://cdn.shopify.com/s/files/1/0430/3755/6889/files/sig_p230_for_sale.pdf
    • https://cdn.shopify.com/s/files/1/0428/8921/6163/files/5314447609.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/council_of_chalcedon_451.pdf
    • https://cdn.shopify.com/s/files/1/0440/7712/1686/files/12052469532.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/tubasesiserezizireg.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_off0000632b.bin
0820efaed99041238c1fda7b168e3f5814f176a7eb7499e406d52941c71a81d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x632B 5900 bytes
font_01_sfnt_off00007745.bin
16612da3e9e60fd6132271032e1a30b7ce5165cbb230299b0c06106b08b822bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7745 10944 bytes

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