Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d60b76506871818…

MALICIOUS

PDF

201.1 KB Created: 2020-09-04 03:54:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d3e97d44296aa4e9d2ba9eeb1243c6c4 SHA-1: 6a471964abd33aeb6be913189ffc4fb3e2db2844 SHA-256: 0d60b76506871818377f67a6c74dda571c0c5e0fe84f0eb08c8f3b22787b4f7e
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, disguised as 'lupus treatment guidelines 2017'. This suggests a phishing or malware distribution attempt. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the embedded URL is the primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • 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.com/wix?keyword=lupus+treatment+guidelines+2017
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0457/7371/7660/files/pegifurozikipabogojopa.pdf
    • https://cdn.shopify.com/s/files/1/0432/6978/3720/files/71273633155.pdf
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/falakowukilam.pdf
    • https://cdn.shopify.com/s/files/1/0432/8092/4840/files/azhage_azhage_song_kathakali.pdf
    • https://cdn.shopify.com/s/files/1/0447/3012/2393/files/life_together_dietrich_bonhoeffer.pdf
    • https://static.usrfiles.com/ugd/77eba6_a5e9c30d69934f819acb450ca961cceb.pdf
    • https://static.usrfiles.com/ugd/6f53d7_af2e152bd7c24d249cf253304abcf1ae.pdf
    • https://static.usrfiles.com/ugd/90423f_22aefcfccdf44bdabc7c06608c33b845.pdf
    • https://cdn.shopify.com/s/files/1/0431/3464/8474/files/kilodazoxawokaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3699/0885/files/84776528302.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002bcb9.bin
e49e552d20362210d5946749c509c9494c6691577fef486e905f2f9429e93b33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2BCB9 5628 bytes
font_01_sfnt_off0002cfd2.bin
1379b3e0a3c9d7c8249d24f087f807c190e76e51400e2be569d81792841aaa6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2CFD2 15728 bytes
font_02_sfnt_off00030073.bin
a4e8e984044abe272106b16a6dc1818af113d57143c335b5edf9c0031ad71969		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30073 16272 bytes

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