Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c0eeea00c642078…

MALICIOUS

PDF

44.7 KB Created: 2020-08-30 07:43:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1a9f8aeaede2f2ba36cf997b39ff9373 SHA-1: 46d30b9810dc959b996addcd4b683010b92c6ed8 SHA-256: 1c0eeea00c6420780c8650a394598d2cd8ad7a508391dd316fb026c793360299
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be a lure for software downloads. The presence of a malicious redirector suggests the intent is to lead the user to a site that will deliver a secondary payload or initiate a phishing attempt.

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/wix?keyword=adobe+premiere+mega+2017
    • https://cdn.shopify.com/s/files/1/0435/2180/2404/files/tewexirizasur.pdf
    • https://cdn.shopify.com/s/files/1/0437/5727/3237/files/gamimanujibow.pdf
    • https://cdn.shopify.com/s/files/1/0449/9665/7320/files/rexuragesifafex.pdf
    • https://static.usrfiles.com/ugd/11f207_2a32580714004527ab58a955e43d7c01.pdf
    • https://static.usrfiles.com/ugd/9cc572_d3a498697d4b4cb4ab349f0c219758d5.pdf
    • https://static.usrfiles.com/ugd/e2c250_322addb18bd349f18a09c1082995ca84.pdf
    • https://static.usrfiles.com/ugd/74c34a_af490262228e42b284fa4858f37094cb.pdf
    • https://static.usrfiles.com/ugd/b8c837_ffe4bb5b60d44115a28d07a42d7f2c23.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_015b83cbd753419d9c09a0be9d276ac8.pdf
    • https://static.usrfiles.com/ugd/921909_4cec9f2e3a604489bbcafe4aab00f036.pdf
    • https://static.usrfiles.com/ugd/61f964_5637e36a7dc94415b00cf094f078687d.pdf
    • https://static.usrfiles.com/ugd/934fc3_3af1f53b4afe4dceba40ac6ccd68ba9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_753f2c1b5afd4c9c9d27b27cd23ea9ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_81dc683b970c48aca77afce710b8cbcd.pdf
    • https://static.usrfiles.com/ugd/18f527_caa5db2b954d4cbb85222753fe17cc4b.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_off000061e6.bin
fc63e5a005e67f836ed28eda547ad5211cdeac6ab66a4e9852fdf857f5dd48c5
pdf-font-stream PDF embedded font (sfnt) at offset 0x61E6 5204 bytes
font_01_sfnt_off00007396.bin
4b2a565ff1e766e6253716f4548052786e27cb79cbd5d1026f08dbd10825c797
pdf-font-stream PDF embedded font (sfnt) at offset 0x7396 10708 bytes
font_02_sfnt_off000097e1.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x97E1 4324 bytes