Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c3d5ea6e6bc97d1…

MALICIOUS

PDF

40.8 KB Created: 2020-08-03 15:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e951c99d92086f59dbc562a7a447c1c9 SHA-1: f0dc18dc3e5eba5831d88a74dc9627c49f167008 SHA-256: 1c3d5ea6e6bc97d1e177627089a0fc9a7f9154e58666660c2f8777e88992f2bf
154 Risk Score

Malware Insights

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

The PDF contains a link farm designed to lure users to a malicious redirector, disguised as a user manual. The primary malicious URL identified is https://ttraff.com/wb?keyword=prestige%20induction%20stove%20pic%201.0%20user%20manual. The ML classifier strongly indicated maliciousness, and the PDF structure suggests a link-based attack.

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/wb?keyword=prestige%20induction%20stove%20pic%201.0%20user%20manual
    • http://files.littlelotuscafe.com/uploads/1/3/0/7/130776434/koxarenopu.pdf
    • http://jutemomub.dahliaspourhouse.com/uploads/1/3/2/7/132740435/8eaddc5f3dbf4.pdf
    • http://files.603fitness.com/uploads/1/3/1/4/131453465/d0c6b67448fa2.pdf
    • http://files.acuityultrasonics.com/uploads/1/3/1/4/131407552/a2530.pdf
    • http://files.bvr-cpaconsultants.com/uploads/1/3/0/8/130874238/a394e5740.pdf
    • https://cdn.shopify.com/s/files/1/0435/6807/0824/files/63282059622.pdf
    • https://cdn.shopify.com/s/files/1/0437/9066/3832/files/64124337092.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/46540512723.pdf
    • https://cdn.shopify.com/s/files/1/0435/2176/9627/files/36383737145.pdf
    • https://cdn.shopify.com/s/files/1/0432/5045/0600/files/nadogov.pdf
    • https://cdn.shopify.com/s/files/1/0428/5906/9599/files/lixufidowejofipu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8313/7178/files/14646670094.pdf
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/night_by_elie_wiesel_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/7783/6703/files/63624225046.pdf
    • https://cdn.shopify.com/s/files/1/0429/8221/1735/files/19336936590.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5757/files/wosokorib.pdf
    • https://cdn.shopify.com/s/files/1/0437/7185/5002/files/ligopokaliw.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_off00004b56.bin
56174dda21d22ac14c07219f5d3dc77ccf6efeb07497a9a6867167722229d9c6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B56 5680 bytes
font_01_sfnt_off00005ea9.bin
0f9abccb8a3649e060941d3e5f4351834377a13b8a341ddda1e162594a00b8c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EA9 9836 bytes
font_02_sfnt_off0000805e.bin
e296a61d2d303e35be9e1a35631556663d2780498efa7e8f3867bf557f172fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x805E 16164 bytes

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