Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e930c013a11997d…

MALICIOUS

PDF

42.1 KB Created: 2020-08-19 20:42:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f4ebdd0a35fc3945bd1cff70fca4d844 SHA-1: b0773ad27048c5adc4ae037f2726619804df1755 SHA-256: 7e930c013a11997d7ccf8c05bbf4dacc90994c38cbfb94472d3fdaf8afc1980c
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, https://ttraff.com/pify?keyword=veritas+dovetail+saw+guide, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure the user to a malicious site under the guise of a product guide. The ML classifier strongly supports the malicious nature of this PDF.

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.com/pify?keyword=veritas+dovetail+saw+guide
    • http://kixawevot.vrm365.com/uploads/1/3/2/6/132681670/8417874.pdf
    • http://files.christopherdavidroche.com/uploads/1/3/2/7/132740498/5642674.pdf
    • http://tefug.regansunshinebrusse.ca/uploads/1/3/1/4/131437246/ef989c0da.pdf
    • http://files.keystonegraphic.com/uploads/1/3/1/8/131856232/rofidefevaji.pdf
    • https://cdn.shopify.com/s/files/1/0427/8019/7031/files/38865927005.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/que_es_monosacaridos.pdf
    • https://cdn.shopify.com/s/files/1/0430/7877/9029/files/xiwapaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wajomuxufukurojudi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9275/3049/files/47419871473.pdf
    • https://cdn.shopify.com/s/files/1/0434/4882/8065/files/dokopejolofu.pdf
    • https://cdn.shopify.com/s/files/1/0448/4136/9761/files/adobe_acrobat_trial_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/59407680767.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_off00005a1b.bin
183394b73c3a440f00b0f0bb9057b6fc71d25366cde82f5700352c10d83eee56
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A1B 4888 bytes
font_01_sfnt_off00006ae1.bin
44ea8a7bb69f28169da725de399710a3435f8dd85b095037286aecea54ace64e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AE1 10292 bytes
font_02_sfnt_off00008e16.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 4324 bytes