Malicious PDF — malware analysis report

Static analysis result for SHA-256 e94345ea80d90b23…

MALICIOUS

PDF

44.3 KB Created: 2020-09-02 15:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 25f02e11882afd506daeda4405af5ea8 SHA-1: 250d11721ad43ab74429978038a48d9af794953c SHA-256: e94345ea80d90b232f474aedec727400ec842f31d687ccccfcce2da680d5ed34
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, includes the URL 'https://ttraff.ru/wix?keyword=breakdown+sheet+music+jojo', which is flagged as malicious. This suggests the document's primary purpose is to lure users to this malicious site, likely for phishing or malware delivery. No scripts were extracted, and the document body's content is largely unreadable beyond the embedded URLs.

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.ru/wix?keyword=breakdown+sheet+music+jojo
    • https://static.usrfiles.com/ugd/756799_2b548091b31245509134699953497e74.pdf
    • https://static.usrfiles.com/ugd/b8c837_423f1dee98b64e0db23e64b60ffe3dff.pdf
    • https://static.usrfiles.com/ugd/72216b_59694af9d060495b81a712d9371cbce5.pdf
    • https://static.usrfiles.com/ugd/4d935e_d67345692b044a2c9dca96f9a8d94f73.pdf
    • https://static.usrfiles.com/ugd/33ab24_078bfffdf08a458db037a113cb02f1f3.pdf
    • https://static.usrfiles.com/ugd/289c5e_eae7dac0b11d408c92475af95d66d678.pdf
    • https://static.usrfiles.com/ugd/834936_2e52c489a7ad4fd187944198f5d27ae9.pdf
    • https://static.usrfiles.com/ugd/b8c837_fbc05465ae0a4ac48cead0826860b0c9.pdf
    • https://cdn.shopify.com/s/files/1/0435/4965/5203/files/16873301778.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nisej.pdf
    • https://cdn.shopify.com/s/files/1/0434/0056/0805/files/95464659959.pdf
    • https://cdn.shopify.com/s/files/1/0437/0654/8377/files/2467771632.pdf
    • https://cdn.shopify.com/s/files/1/0433/6504/0286/files/47227273837.pdf
    • https://cdn.shopify.com/s/files/1/0437/5959/9765/files/rovexadereketur.pdf
    • https://cdn.shopify.com/s/files/1/0430/6147/7527/files/student_form_in_html_code.pdf
    • https://cdn.shopify.com/s/files/1/0441/0382/7608/files/aiou_b._ed_admission_form_2020.pdf
    • https://cdn.shopify.com/s/files/1/0428/6329/6678/files/10848734899.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • https://creativecommons.org/pu
    • 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_off00005f2b.bin
248d054c401e296ac244aacd9e06ccbb5082c7aa085389c4c38a5ef9f29167af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2B 5428 bytes
font_01_sfnt_off0000718e.bin
117377b3d51f05115d1cdab178991ccfea23a1acdbdd5598db3e6eb38729b9bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x718E 15736 bytes

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